10 Krey Boulevard     Rensselaer, NY  12144

January 31, 2012

Via Electronic Delivery

Honorable Kimberly D. Bose, Secretary Federal Energy Regulatory Commission 888 First Street, NE

Washington, DC 20426

Re: New York Independent System Operator, Inc., Docket No. ER06-1014-000
Eleventh Price Validation Informational Report

Dear Ms. Bose:

Pursuant to Ordering Paragraph (B) of the Commission’s July 14, 2006 order (“July 14 Order”) in the above-captioned proceeding,1 the New York Independent System Operator, Inc. (“NYISO”) respectfully submits this Price Validation Informational Report (“Report”), which details the corrections that the NYISO has made to erroneous locational based marginal prices (“LBMPs”) from the period July 1, 2011 through December 31, 2011, as well as actions the NYISO has taken to minimize pricing errors.

Due to the NYISO’s continued efforts, conducted in collaboration with its stakeholders,
price errors and the need for price corrections continue to be infrequent.  In 2005, the NYISO
corrected prices in approximately 16% of hours.  In 2006, that number was reduced to
approximately 3% of hours.  In 2007, the number was further reduced to approximately 1% of
hours.  In 2008, the percentage of hours containing price errors continued to decline to
approximately 0.7%.  In 2009 the percentage of hours corrected was 0.3%.  In 2010 the
percentage of hours corrected was 0.2%.  In 2011 the correction rate showed a slight increase,
with the percentage of hours corrected moving up to 0.3%.  This increase in price corrections
was due to issues related to the deployment of Enhanced Interregional Transaction Coordination
(EITC) code, which introduced 15-minute scheduling of external transactions.2

I.Background

In its July 14 Order, the Commission conditionally accepted proposed revisions to the NYISO’s tariffs to eliminate its Temporary Extraordinary Procedures (“TEPs”) and establish a framework and time limits for price corrections outside of the TEPs.  In that order, the

1 New York Independent System Operator, Inc., 116 FERC ¶ 61,037 (2006).

2 See New York Independent System Operator, Order Conditionally Accepting Proposed Tariff Revisions
and Granting Waiver, Docket No. ER11-2547-000, 134 FERC 61,186 (issued March 14, 2011);  New York
Independent System Operator, Order Granting Deferral of Effective Dates and Waivers, Docket Nos. ER11-2454-
000 and ER11-2547-000, 135 FERC 61,256 (issued June 20, 2011);  New York Independent System Operator, Inc.,
Letter Order (accepting April 13, 2011 compliance filing on scheduling at proxy buses), Docket No. ER11-2547-001
(issued July 21, 2011).

Honorable Kimberly D. Bose, Secretary January 31, 2012

Page 2

Commission required the NYISO to submit informational reports every six months thereafter

which indicate the causes of pricing errors that occurred during the reporting period, the duration
and rate impact of those errors and the associated corrections, and the actions the NYISO took to
correct the pricing errors.  In addition, the Commission directed the NYISO to summarize and
discuss what actions it undertook to reduce or eliminate the types of pricing errors that occurred.

This is the eleventh Report submitted in compliance with the July 14 Order.3  This Report details all of the price corrections the NYISO made for the period July 1, 2011 through
December 31, 2011 in its Real-Time Market.4  There were no Day-Ahead Market price
corrections during the reporting period.  The Report identifies the causes of each pricing error, the number of Real-Time Dispatch (“RTD”) intervals affected,5 and the amount by which each corrected price was changed.  In addition, the Report describes the measures taken by the
NYISO to minimize the incidence of pricing errors and to improve its price validation and
correction practices.  Attachments A and B to this Report detail the Real-Time Market price
corrections for the period July 1, 2011 through December 31, 2011.

II.Communications and Correspondence

Communications regarding this filing should be directed to: Robert E. Fernandez, General Counsel

*Mollie Lampi, Assistant General Counsel

Raymond Stalter, Director of Regulatory Affairs
New York Independent System Operator, Inc.

10 Krey Boulevard

Rensselaer, NY 12144
Tel:  (518) 356-6000
Fax:  (518) 356-4702
rfernandez@nyiso.com
mlampi@nyiso.com
rstalter@nyiso.com

*Person designated to receive service.

3 The NYISO submitted the ten prior reports to the Commission on January 31, 2007, July 31, 2007,

January 31, 2008, August 1, 2008, January 30, 2009, July 31, 2009, January 31, 2010, July 29, 2010, January 28, 2011, and July 29, 2011 respectively.

4 The Real-Time Market is defined as the “ISO-administered markets for Energy and Ancillary Services,

resulting from the operation of the RTC [Real-Time Commitment] and RTD [Real-Time Dispatch]” models.  OATT at Section 1.18; Services Tariff at Section 2.18.  While the NYISO corrects prices in the hour-ahead market, as
necessary, that “market” consists of only advisory prices that are not used in NYISO settlements.  Furthermore, the NYISO has corrected relatively few advisory prices during the period covered by this Report.

5 RTD intervals normally occur every five minutes.

Honorable Kimberly D. Bose, Secretary January 31, 2012

Page 3

III.Service

The NYISO will send an electronic link to this filing to the official service list compiled
by the Secretary in this proceeding, to the official representative of each of its customers, to the
New York Public Service Commission, and to the New Jersey Board of Public Utilities.  In
addition, a complete copy of this filing will be posted on the NYISO’s website at
www.nyiso.com.

IV.Report Details

A.Types and Causes of Pricing Errors

Attachment Q of the OATT and Attachment E of the Market Services Tariff define two
types of price errors.6  The first type of error (“Type I”) results from a simple miscalculation and can reflect a software programming error or a failure of the software to produce an accurate price calculation.  The second type of error (“Type II”) results when a price is based on an incorrect
price-setting resource.

The NYISO classifies pricing errors at two levels.  The first level is the type of error, as described above.  The second level provides a more detailed description of the underlying cause of the error.  The NYISO recognizes eight second-level error classifications, as follows:

1 -  Posting Error - Posting errors occur when prices do not properly post on NYISO’s
website.  These include instances when prices posted incorrectly or did not post at
all.

2 -  Indeterminacy / Penalty or Shift Factor Trade-offs - Indeterminacies occur when
the pricing solution cannot be tied to a specific resource.  Penalty and shift factor
trade-offs are dispatch schedules that are mathematically correct but inconsistent
with actual operating practices or procedures.

3 -  Static Data Error - Static data errors are instances when incorrect non-metered data
are used in the pricing and scheduling system software.

4 -  Computer System Failure - Computer system failures include all IT hardware
systems used in compiling data, and calculating and posting prices.

5 -  Software Error - Software errors are programming errors in the computer code that
is used in the commitment, dispatch and price calculation processes.

6 -  Telemetry - Telemetry issues are caused by problems in the metering, compilation
and conveyance of meter data from generators, loads, tie lines and phase angle
regulators to the NYISO.

6 See OATT, Attachment Q at Sections 23.1.1 and 23.1.2; Services Tariff, Attachment E at Sections 20.1.1 and 20.1.2.

Honorable Kimberly D. Bose, Secretary January 31, 2012

Page 4

7 -  Prices Inconsistent with Dispatch / No Marginal Unit - Errors here are the result
of the unit dispatch and pricing not being consistent.  Also included are instances
when no marginal unit can be identified.

8 -  Operator Input - Operator input errors occur when the system operator enters an
erroneous value that results in incorrect pricing.

B. Discussion of Pricing Errors from July through December 2011

The NYISO has conducted an analysis of its Real-Time Market from July through

December 2011 to determine the number of intervals and hours that required price corrections, as well as the causes of the underlying price errors.  Table 1-A below provides a count of hours corrected by month in the Real-Time Market.

Table 1-A

RTD Hours Corrected
July - December 2011

2011

July

August

September
October

November
December

Hours

CorrectedTotal% Corrected

57440.67%

17440.13%

07200.00%

17440.13%

07200.00%
0 744 0.00%

Total74,4160.16%

As shown above, the NYISO corrected prices in only 0.16% of the hours in the second
half of 2011.  It should be noted that any hour that had at least one interval corrected is included
in this tabulation.  During this period, three months, September, November and December, had
no price corrections, August and October each had one hour corrected, and  July had almost all
of the price corrections for the period due to a  a problem with scarcity pricing.  As a result of
errors in the Scarcity Pricing posting logic, the RTD energy and ancillary prices did not

accurately reflect Scarcity Pricing as defined in the Market Services Tariff.

Table 1-B below provides a compilation, by month, of the number of RTD intervals corrected from July through December of 2011.  As would be expected, the percentage of intervals corrected is significantly less than the percentage of hours corrected because not all intervals in a corrected hour were erroneous.

Honorable Kimberly D. Bose, Secretary January 31, 2012

Page 5

Table 1-B

RTD Intervals Corrected
July - December 2011

2011

July

August

September
October

November
December

Intervals

CorrectedTotal% Corrected

509,0600.55%

29,0220.02%

08,6970.00%

28,9890.02%

08,6950.00%
0 8,989 0.00%

Total5453,4520.10%

For the period July through December 2011 there were 54 RTD intervals corrected for a
correction rate of 0.1%.  Three months (September, November and December) had no
corrections.  The highest monthly interval correction rate of 0.55% occurred in July due to the
scarcity pricing issue described above.  All but four intervals corrected were because of this
problem.

The price corrections from July through December 2011 were classified by error type and error description for both hours and intervals.  Table 2 provides the distribution of price
corrections by month between the error types (Type I or Type II).

As Table 2 shows, nearly all of the RTD interval price corrections in the second half of 2011 were Type I - Calculation Errors.  On an hourly basis, six of the seven hours were
corrected for Type I errors.

Table 2

RTD Price Correction Error Types
July - December 2011

2011

July

August

September
October

November
December

Intervals

Type IType II

50-

2-

--

-2

--

--

Hours

Type IType II

5-

1-

--

-1

--

--

Total52261

Honorable Kimberly D. Bose, Secretary January 31, 2012

Page 6

Table 3 presents a summary of RTD interval price corrections classified by reason for the second half of 2011.

Table 3

July - December 2011

RTD Interval Price Corrections by Reason

ReasonJulAugSepOctNovDecTotal

1- PostingError-2----2

2- Indeterminacy / Penalty orShift FactorTrade-Off------0

3- DataError-Static------0

4- ComputerSystemFailure------0

5- SoftwareError50-----50

6- Telemetry------0

7- Prices Inconsistentw/Dispatch/NoMarginalUnit------0

8 - Operator Input---2--2

Total502020054

July Price Corrections

July had price corrections on two days, the 22nd and the 31st.  The price corrections for
July 22 involved incorrect scarcity pricing for five hours totaling forty-seven intervals.  High
temperatures and loads necessitated the activation of demand-side resource programs.  These
programs were invoked for HB 12-18.  Due to problems with the Scarcity Pricing posting logic,
the RTD energy and ancillary prices did not accurately reflect Scarcity Pricing as defined in the
Market Services Tariff.  Due to the complexity of the Scarcity Pricing rules along with the

limited time and resources available for reviewing and revising the Scarcity Pricing posting

logic, it was not possible to correct all of the RTD energy and ancillary prices by the correction deadline of July 26.  While RTD energy prices were corrected within the three day tariff
deadline, RTD ancillary prices were not.  Thus a waiver filing was submitted to FERC
requesting permission to correct RTD Ancillary Services prices after the July 26 correction deadline.7  This waiver was approved by FERC on September 01, 2011.8

The July 31 price correction involved three intervals in one hour (HB 17).  In this case
there was a software error in how multiple constraints were handled in the pricing logic for non-
competitive, variably scheduled proxy generator buses associated with the deployment of EITC
code.

7 Notification of Inability to Timely Complete Price Corrections, Request for Limited Tariff Waiver to

Permit Ancillary Service Prices to be corrected, and request for shortened notice period and expedited commission
action of the New York Independent System Operator, Inc. , Docket No. ER11-4141-000 (Filed July 29, 2011)

8 New York Independent System Operator, Inc., 136 FERC ¶ 61,156, Docket No. ER11-4141-000 (2011)

Honorable Kimberly D. Bose, Secretary January 31, 2012

Page 7

August Price Corrections

In August there were two intervals corrected on August 23.  The correction was

necessary because a software deployment resulted in the failure of the two intervals to post to OASIS.  The intervals 13:45 and 14:00 were subsequently recovered and posted.

September Price Corrections

There were no price corrections in September 2011.

October Price Corrections

There were two intervals corrected on October 27 - 09:10 and 09:15.  The erroneous prices were the result of an operator error.

November Price Corrections

There were no price corrections in November.

December Price Corrections

There were no price corrections in December.

C.Correction of Pricing Errors

The overwhelming majority of price corrections occur in the real-time market.  When erroneous prices are found, there are a number of ways they can be corrected.  NYISO uses the following seven correction modes for erroneous LBMPs:

1. Replace with the price of a preceding or subsequent interval

2. Average the preceding and subsequent interval prices

3. Replace with the advisory price of a preceding interval

4. Substitute erroneous LBMP with price from a similar bus

5. Recalculate prices

6. Replace with prices of another market (RTC or SCUC)

7. Repost missing prices

In accordance with NYISO’s Market Services Tariff, price corrections must accurately reflect actual system conditions.  A correction mode that is appropriate for an error in one
circumstance may not be appropriate for the same error in another circumstance due, for
example, to different commitment schedules, constraint patterns or external schedules.  When
pricing errors are found, the NYISO conducts an evaluation of the system conditions in the
erroneous pricing interval, and uses a correction mode that most accurately reflects those
conditions.  The determining factor is how closely the final price reflects the state of the system during the erroneous pricing interval.

D.Impact of Price Corrections

The impact of price corrections on zonal LBMPs was evaluated for the period July

through December 2011.  In this evaluation, the average change in LBMP was calculated for

Honorable Kimberly D. Bose, Secretary January 31, 2012

Page 8

each month using zonal prices in the Real-Time Market.  The number of price increases and

decreases that resulted from the price corrections was also examined.  Tables 4 and 5 present the results of this analysis.

Table 4

Average Zonal Price Change
July - December 2011

JulAugSepOctNovDec

CAPITAL210.36-0.04--21.87--

CENTRAL287.54-0.13--60.81--

DUNWOODIE164.990.05--36.41--

GENESEE278.24-0.15--2.32--

HUDSON VALLEY120.240.03--36.50--

LONG ISLAND74.610.16--36.53--

MILLWOOD174.060.06--36.35--

MOHAWK VALLEY281.34-0.07--34.61--

NEW YORK CITY218.490.07--36.52--

NORTH184.90-0.02--18.32--

WEST279.41-0.22--475.96--

HQ258.720.02--21.32--

NPX124.110.00--34.13--

OH157.70-0.16-241.64--

PJM137.33-0.40--150.66--

Table 5

Zonal Price Change Count (Increase/Decrease)

July - December 2011

JulAugSepOctNovDecTotal

Increase  DecreaseIncrease  DecreaseIncrease  DecreaseIncrease  DecreaseIncrease  DecreaseIncrease  DecreaseIncrease  Decrease

CAPITAL341511000200003518

CENTRAL3601100020000373

DUNWOODIE19820000200002110

GENESEE3601100110000382

HUDSON VALLEY291511000200003018

LONG ISLAND2402000020000262

MILLWOOD2062000020000228

MOHAWK VALLEY3601100020000373

NEW YORK CITY1812000020000203

NORTH3701100020000383

WEST3701100020000383

HQ1401100020000153

NPX251311000200002616

OH1400100110000152

PJM2701100020000283

Total40658181100228000042697

Honorable Kimberly D. Bose, Secretary January 31, 2012

Page 9

As can be seen in Table 4, the average zonal price changes were significantly positive in July, generally slightly negative in August, and negative, with the exception of OH, in October. The July average change across all zones was almost $200.  The average changes across all
zones in August and October were -$0.05 and -$50 respectively.  As shown in Table 5, there were a total of 523 zonal interval prices corrected.  Of these, 426 zonal interval prices (81%) were increased and 97 (19%) were decreased.

E.Price Correction Mitigation Initiatives

The NYISO’s efforts to improve initial price accuracy have successfully maintained a

high level of price accuracy in 2011.  This continued success is due to the NYISO’s commitment to identifying pricing problems, thoroughly evaluating these problems, and developing, where
possible, solutions to mitigate these problems.  These efforts have dramatically reduced pricing
errors since 2006.

For the July through December 2011 reporting period the NYISO has initiated a number of efforts - both institutional (e.g., software enhancements) and operational - to revise and
develop strategies and procedures to mitigate pricing errors.  Among the measures undertaken during the reporting period are:

•   The Integrated Source Selection (ISS), an automated system that screens telemetry

and switches to alternate metering sources when erroneous values are found, has been enhanced to expand and improve monitoring of generators, lines and PARs.

•   On-going operator training has an enhanced curriculum to focus on the identification
and response to pricing problems.

•   The NYISO has continued to enhance its network model and scheduling systems to
improve performance.

•   Corrections to the Scarcity Pricing posting logic.

V.Conclusion

WHEREFORE, the New York Independent System Operator, Inc., respectfully requests that the Commission accept this informational report.

Respectfully submitted,

/s/ Mollie Lampi

Mollie Lampi

Assistant General Counsel

New York Independent System Operator, Inc.

10 Krey Blvd.

Rensselaer, NY 12144 (518) 356-7530

mlampi@nyiso.com

ATTACHMENT A

RTD Price Correction Report
July - December 2011

Note to Attachment A:

The counts for the number of intervals corrected as compiled in the RTD Price Correction Report below vary from the totals presented in the body of the report (Tables 1-B, 2 and 3).  The compilation of the Attachment A Price Correction Report checks for changes to any of the components of the LBMP (i.e., Reference Bus Price, Congestion or Losses) while the data presented in the body of the
report (Tables 1-B, 2 and 3) are based only on changes to the LBMP.  On July 22 there were four intervals that had LBMP component corrections (congestion and reference bus) that netted out, thus not changing the LBMP.

RTD Energy Price Correction Report

1Posting ErroraReplace w/Preceding Interval

2Indeterminacy / Penalty or Shift Factor Trade-offsbReplace w/Subsequent Interval

3Data Error - StaticcAverage - Preceding & Subsequent

4Computer System FailuredReplace w/RTD Advisory Price

5Software ErroreSubstitution w/Similar Bus Price

6TelemetryfRTD Re-Run

7Prices Inconsistent w/Dispatch / No Marginal UnitgReplace w/RTC Prices

8Operator InputhReplace w/SCUC Prices

Error Type:iRecalculation - External Proxy

ICalculation ErrorjRecalculation

IIIncorrect Price Setting ResourcekRe-Post

Intervals Corrected by Zone

Additional Comments

1/1/201112:40:4912:40:49112II5d111111111111111Software Error - Generator Schedule Error (NYC unit > 500MW)

Jan 201111111111111111111

3/22/201115:35:0015:35:00115II6d111111111111111Metering Error, Unit drops out of solution - LI generator (<400MW)

Mar 201111111111111111111

5/17/201119:45:0019:50:00219II5d222222222222222DNI Scheduling Error

5/17/201122:05:0023:00:001222I1k0000000000012121212Posting Error

5/18/201112:00:0012:00:00111II5d111111111111111DNI Scheduling Error

5/18/201112:05:0012:10:00212II5d222222222222222DNI Scheduling Error

5/19/20116:05:006:15:0036I1k000000000003000Posting Error

5/19/20117:05:007:15:0037I1k000000000003000Posting Error

5/25/201113:00:0013:00:00112II5d111111111111111Software Error

5/25/201113:05:0013:55:001113II5d11111111111111111111111111011Software Error

5/27/201122:55:0023:00:00222II5d222222222222222Software Error

May 2011379191919191919191919191937312031

6/6/20119:10:009:25:0049II8d444444444444444Operator Error

6/7/20113:15:003:15:0013II4d111111111111111Load Forecast Error

6/9/201116:25:0016:39:40616II6d666666666660060Metering Error, Results in load forecast anomaly - NYC generator (>400MW)

6/28/201112:00:0012:00:00111II5d111111111111111Software Error

Jun 2011124121212121212121212121266126

7/22/201113:05:0014:00:001213I5j11111112121112111211110000Scarcity Pricing Software Error

7/22/201114:05:0015:00:001314I5j13131313131313131313131313013Scarcity Pricing Software Error

7/22/201115:13:0015:55:481115I5j000111101001110501100Scarcity Pricing Software Error

7/22/201116:05:0017:00:001316I5j131212121312121312121213121313Scarcity Pricing Software Error

7/22/201117:05:0017:05:00117I5j111111111111111Scarcity Pricing Software Error

7/22/201117:25:0017:25:00117I5j000110101110100Scarcity Pricing Software Error

7/31/201117:50:0018:00:00317I5k000000000003000Software Error

Jul 2011546383737505137493850484330381427

8/23/201113:45:0013:45:00113I1k111111111111111Software Deployment

8/23/201114:00:0014:00:00113I1k111111111111111Software Deployment

Aug 201121222222222222222

10/27/20119:10:009:15:0029II8d222222222222222Incorrect line limit

Oct 201121222222222222222

ATTACHMENT B

RTD Price Correction Impact
July - December 2011

CAPITAL

Time StampOriginal LBMPFinal LBMP

7/22/201113:05:00108.25482.54

7/22/201113:10:00109.07482.59

7/22/201113:15:00109.39496.21

7/22/201113:17:00177.10481.75

7/22/201113:25:00172.02480.44

7/22/201113:30:00170.60480.43

7/22/201113:35:00122.30479.98

7/22/201113:40:00493.18480.43

7/22/201113:45:00493.15480.43

7/22/201113:50:00173.57480.87

7/22/201113:55:00163.49480.44

7/22/201114:05:00492.20479.11

7/22/201114:10:00492.71479.98

7/22/201114:15:00492.38479.54

7/22/201114:20:00489.71480.41

7/22/201114:25:00492.26479.96

7/22/201114:30:00492.56480.85

7/22/201114:35:00492.82480.85

7/22/201114:38:42495.53481.30

7/22/201114:40:12291.64479.98

7/22/201114:45:00492.69480.43

7/22/201114:50:00492.98480.41

7/22/201114:55:00495.32480.00

7/22/201115:00:00495.21479.59

7/22/201115:13:00115.73496.33

7/22/201115:14:48120.63496.26

7/22/201115:15:00122.87496.19

7/22/201115:16:24122.87496.19

7/22/201115:25:00154.74495.13

7/22/201115:30:00145.06495.78

7/22/201115:35:00147.13495.42

7/22/201115:40:00141.69495.28

7/22/201115:45:00140.60495.54

7/22/201115:55:00138.67495.12

7/22/201115:55:48292.30492.30

7/22/201116:05:00495.62481.78

7/22/201116:10:00174.92482.24

7/22/201116:15:00170.71482.22

7/22/201116:20:00273.63480.05

7/22/201116:25:00327.30480.04

7/22/201116:30:00460.57480.07

7/22/201116:35:00340.75479.63

7/22/201116:45:00240.04480.05

7/22/201116:50:00180.24479.61

7/22/201116:54:48155.02480.05

7/22/201116:56:18141.15479.17

7/22/201117:00:00109.19479.15

7/22/201117:05:00109.19479.15

7/22/201117:25:00108.54495.63

8/23/201113:45:0038.7238.80

8/23/201114:00:0038.7238.56

10/27/2011 9:10:0064.5345.02

10/27/2011 9:15:0069.2445.02

CENTRAL

Time StampOriginal LBMPFinal LBMP

7/22/201113:05:0094.67461.95

7/22/201113:10:0097.02461.16

7/22/201113:17:00166.48459.04

7/22/201113:25:00160.78457.33

7/22/201113:30:00159.90457.74

7/22/201113:35:00111.04457.74

7/22/201113:40:00159.56457.30

7/22/201113:45:00159.91457.30

7/22/201113:50:00159.71457.74

7/22/201113:55:00151.88456.89

7/22/201114:05:00171.24458.67

7/22/201114:10:00166.83458.63

7/22/201114:15:00170.88458.63

7/22/201114:20:00240.63458.15

7/22/201114:25:00176.85457.70

7/22/201114:30:00177.66457.26

7/22/201114:35:00171.55457.26

7/22/201114:38:42108.95455.48

7/22/201114:40:12191.27458.19

7/22/201114:45:00171.10458.19

7/22/201114:50:00164.46459.04

7/22/201114:55:00107.12457.33

7/22/201115:00:00107.33457.41

7/22/201116:05:00109.31455.11

7/22/201116:10:00142.11454.26

7/22/201116:15:00138.19455.11

7/22/201116:20:00252.78453.90

7/22/201116:25:00303.00453.86

7/22/201116:30:00427.74453.06

7/22/201116:35:00316.40453.50

7/22/201116:45:00221.12453.46

7/22/201116:50:00166.38453.46

7/22/201116:54:48142.80453.90

7/22/201116:56:18129.36454.79

7/22/201117:00:0097.59456.08

7/22/201117:05:0097.59456.08

8/23/201113:45:0037.3937.44

8/23/201114:00:0037.3937.09

10/27/2011 9:10:0063.0343.62

10/27/2011 9:15:00145.8343.62

DUNWOOD

Time StampOriginal LBMPFinal LBMP

7/22/2011 13:05:00261.48498.21

7/22/2011 13:10:00233.29498.21

7/22/2011 13:15:00225.00499.43

7/22/2011 13:17:00221.44497.77

7/22/2011 13:25:00228.25497.78

7/22/2011 13:30:00221.60498.22

7/22/2011 13:35:00221.22497.78

7/22/2011 13:40:00499.23497.78

7/22/2011 13:45:00499.38498.22

7/22/2011 13:50:00272.87498.22

7/22/2011 13:55:00230.07497.78

7/22/2011 14:05:00499.17497.78

7/22/2011 14:10:00499.35498.22

7/22/2011 14:15:00499.17497.78

7/22/2011 14:20:00499.07498.22

7/22/2011 14:25:00499.14497.77

7/22/2011 16:05:00499.58498.22

7/22/2011 16:20:00364.00497.78

7/22/2011 16:25:00415.61497.78

7/22/2011 16:35:00415.17497.79

7/22/2011 16:45:00331.70498.23

7/22/2011 16:50:00255.90497.78

7/22/2011 16:54:48225.15498.23

7/22/2011 16:56:18225.04497.78

7/22/2011 17:00:00221.06498.23

7/22/2011 17:05:00221.06498.23

7/22/2011 17:25:00210.13499.62

8/23/2011 13:45:0040.5640.65

8/23/2011 14:00:0040.5640.58

10/27/2011 9:10:0067.5347.28

10/27/2011 9:15:0099.8547.28

GENESEE

Time StampOriginal LBMPFinal LBMP

7/22/201113:05:0093.02453.89

7/22/201113:10:0094.77450.45

7/22/201113:17:00161.95446.57

7/22/201113:25:00156.41444.89

7/22/201113:30:00155.70445.73

7/22/201113:35:00108.56447.51

7/22/201113:40:00155.83446.62

7/22/201113:45:00156.18446.62

7/22/201113:50:00155.83446.62

7/22/201113:55:00148.19445.78

7/22/201114:05:00166.92447.11

7/22/201114:10:00162.78447.51

7/22/201114:15:00166.91447.95

7/22/201114:20:00235.02447.46

7/22/201114:25:00172.72447.02

7/22/201114:30:00173.16445.68

7/22/201114:35:00167.37446.13

7/22/201114:38:42106.18443.90

7/22/201114:40:12186.25446.17

7/22/201114:45:00166.94447.06

7/22/201114:50:00160.95449.24

7/22/201114:55:00104.83447.56

7/22/201115:00:00104.72446.32

7/22/201116:05:00106.74442.22

7/22/201116:10:00141.28440.50

7/22/201116:15:00137.15441.33

7/22/201116:20:00252.92440.16

7/22/201116:25:00306.21440.11

7/22/201116:30:00437.65438.44

7/22/201116:35:00320.48439.77

7/22/201116:45:00219.34439.72

7/22/201116:50:00161.50440.16

7/22/201116:54:48138.48440.16

7/22/201116:56:18125.45441.05

7/22/201117:00:0094.93443.66

7/22/201117:05:0094.93443.66

8/23/201113:45:0036.5436.55

8/23/201114:00:0036.5436.24

10/27/2011 9:10:0061.2142.18

10/27/2011 9:15:0027.7842.18

HUDSON VALLEY

Time StampOriginal LBMPFinal LBMP

7/22/201113:05:00223.71497.76

7/22/201113:10:00202.82497.77

7/22/201113:15:00196.84499.34

7/22/201113:17:00211.66497.33

7/22/201113:25:00215.57497.33

7/22/201113:30:00210.26497.78

7/22/201113:35:00197.49497.33

7/22/201113:40:00499.07497.33

7/22/201113:45:00499.07497.33

7/22/201113:50:00249.43497.78

7/22/201113:55:00214.73497.33

7/22/201114:05:00499.01497.33

7/22/201114:10:00499.19497.78

7/22/201114:15:00499.01497.33

7/22/201114:20:00498.60497.33

7/22/201114:25:00498.97497.33

7/22/201114:30:00499.13497.77

7/22/201114:35:00499.17497.77

7/22/201114:38:42499.47497.77

7/22/201114:40:12471.93497.78

7/22/201114:45:00499.17497.78

7/22/201114:50:00499.20497.77

7/22/201114:55:00499.27496.89

7/22/201115:00:00499.17496.45

7/22/201115:13:00428.44499.42

7/22/201115:14:48446.68499.48

7/22/201115:15:00452.40499.47

7/22/201115:16:24452.40499.47

7/22/201115:40:00457.17499.36

7/22/201115:45:00456.98499.47

7/22/201115:55:00434.46499.36