Table 8.  New York City reservoir release design data.
(River Master daily operation record)

[ft3/s, cubic feet per second; (ft3/s)-d, cubic feet per second days; Col., Column]

 

Advance estimate of discharge of Delaware River at Montague, New Jersey
exclusive of New York City reservoir releases

 

Computation of balancing adjustment

 

Date of
advance
estimate

Powerplant release
forecasts

Uncontrolled
runoff

Montague
date

Discharge
(ft3/s)

Indicated
deficiency

Balancing
adjustment
(ft3/s)

Directed
release
(ft3/s)

Adjusted directed
release

Actual
deficiency

Cumulative
difference
(ft3/s)-d

Balancing
adjustment
(ft3/s)

 

Lake
Wallenpaupack
(ft3/s)

Rio
Reservoir
(ft3/s)

Current
condition
(ft3/s)

Weather
adjustment
(ft3/s)

Daily
(ft3/s)

Cumulative
(ft3/s)-d

Daily
(ft3/s)

Cumulative
(ft3/s)-d

 

2001

Col. 1

Col. 2

Col. 3

Col. 4

 

Col. 5

Col. 6

Col. 7

Col. 8

Col. 9

Col. 10

Col. 11

Col. 12

Col. 13

Col. 14


MONTAGUE DESIGN RATE = 1,550 (
ft3/s) DECEMBER 1, 2001 to DECEMBER 3, 2001

 

 

Nov. 28

0

0

890

136

Dec. 1

1,026

524

-3

521

520

24,976

560

25,036

-60

+6

 

29

0

0

882

123

2

1,005

545

-18

527

509

25,485

0

25,036

449

-45

 

30

0

0

904

241

3

1,145

405

-7

398

402

25,887

0

25,036

851

-50

 

 

MONTAGUE DESIGN RATE = 1,350 (ft3/s) DECEMBER 4, 2001 to DECEMBER 29, 2001

The estimated discharge at Montague was greater than the Montague design rate from December 4, 2001 to December 5, 2001

 

 

Dec. 3

0

0

1,536

0

6

1,536

0

-

0

0

0

55

55

-55

+6

 

4

32

0

1,355

29

7

1,416

0

-

0

0

0

143

198

-198

+20

 

5

65

0

1,172

33

8

1,270

80

0

80

80

80

30

228

-148

+15

 

6

0

0

1,054

15

9

1,069

281

0

281

280

360

320

548

-188

+19

 

7

0

0

972

258

10

1,230

120

+6

126

126

486

216

764

-278

+28

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

0

0

900

536

11

1,436

0

+20

0

0

486

224

988

-502

+50

 

9

0

0

994

1

12

995

355

+15

370

369

855

489

1,477

-622

+50

 

10

200

0

1,049

44

13

1,293

57

+19

76

76

931

51

1,528

-597

+50

 

11

120

85

977

142

14

1,324

26

+28

54

55

986

174

1,702

-716

+50

 

12

129

0

947

256

15

1,332

18

+50

68

69

1,055

0

1,702

-647

+50

 

The estimated discharge at Montague was greater than the Montague design rate from December 16, 2001 to December 29, 2001.
MONTAGUE DESIGN RATE = 1,100 ft
3/s DECEMBER 30, 2001 to MAY 28, 2002
The estimated discharge at Montague was greater than the Montague design rate from December 30, 2001 to May 28, 2002.

 

Col. 1 - Furnished by power company.

Col. 2 - Furnished by power company.

Col. 3 - Computed from index stations.

Col. 4 - Computed increase in runoff based on quantitative
precipitation forecasts.

Col. 5 = Col. 1 + Col. 2 + Col. 3 + Col. 4.

Col. 6 = Design rate - Col. 5, when positive;
otherwise Col. 6 = 0.

Col. 7 = Col. 14 (4 days earlier).

Col. 8 = Design rate - Col. 5 + Col. 7, when
positive; otherwise Col. 8 = 0.

Col. 9 = Col. 7 from Table 9.

Col. 10 = Summation of Col. 9.

Col. 11 = Design rate - (Col. 9 + Col. 10 from Table 9), when positive; otherwise   Col. 11 = 0.

Col. 12 = Summation of Col. 11.

Col. 13 = Col. 10 - Col. 12.Col. 14 = Col. 13 divided by  -10, limited to ±50.

 

 

 

Table 8.  New York City reservoir release design data—continued.
(River Master daily operation record)

[ft3/s, cubic feet per second; (ft3/s)-d, cubic feet per second days; Col., Column]

 

Advance estimate of discharge of Delaware River at Montague, New Jersey
exclusive of New York City reservoir releases

 

Computation of balancing adjustment

 

Date of
advance
estimate

Powerplant release
forecasts

Uncontrolled
runoff

Montague
date

Discharge
(ft3/s)

Indicated
deficiency

Balancing
adjustment
(ft3/s)

Directed
release
(ft3/s)

Adjusted directed
release

Actual
deficiency

Cumulative
difference
(ft3/s)-d

Balancing
adjustment
(ft3/s)

 

Lake
Wallenpaupack
(ft3/s)

Rio
Reservoir
(ft3/s)

Current
condition
(ft3/s)

Weather
adjustment
(ft3/s)

Daily
(ft3/s)

Cumulative
(ft3/s)-d

Daily
(ft3/s)

Cumulative
(ft3/s)-d

 

2002

Col. 1

Col. 2

Col. 3

Col. 4

 

Col. 5

Col. 6

Col. 7

Col. 8

Col. 9

Col. 10

Col. 11

Col. 12

Col. 13

Col. 14

 


MONTAGUE DESIGN RATE = 1,750 (
ft3/s) May 29, 2002 to November 30, 2002

The estimated discharge at Montague was greater than the Montague design rate from May 29, 2002 to July 6, 2002.

 

 

July 4

381

0

1,250

0

July 7

1,631

119

0

119

119

119

147

147

-28

+3

 

5

381

0

1,182

0

8

1,563

187

0

187

187

306

244

391

-85

+8

 

6

470

0

1,037

73

9

1,580

170

0

170

170

476

246

637

-161

+16

 

7

470

0

964

9

10

1,443

307

0

307

307

783

122

759

24

-2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

470

0

900

153

11

1,523

227

+3

230

230

1,013

0

759

254

-25

 

9

470

0

898

83

12

1,451

299

+8

307

307

1,320

215

974

346

-35

 

10

470

0

1,018

0

13

1,488

262

+16

278

278

1,598

285

1,259

339

-34

 

11

0

71

967

0

14

1,038

712

-2

710

709

2,307

989

2,248

59

-6

 

12

0

71

940

0

15

1,011

739

-25

714

713

3,020

933

3,181

-161

+16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

13

608

71

882

14

16

1,575

175

-35

140

140

3,160

266

3,447

-287

+29

 

14

608

71

844

22

17

1,545

205

-34

171

171

3,331

414

3,861

-530

+50

 

15

608

223

862

0

18

1,693

57

-6

51

51

3,382

409

4,270

-888

+50

 

16

608

0

596

30

19

1,234

516

+16

532

532

3,914

540

4,810

-896

+50

 

17

608

0

563

188

20

1,359

391

+29

420

420

4,334

437

5,247

-913

+50

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

18

288

0

554

36

21

878

872

+50

922

922

5,256

742

5,989

-733

+50

 

19

288

32

523

31

22

874

876

+50

926

924

6,180

774

6,763

-583

+50

 

20

417

32

593

13

23

1,055

695

+50

745

745

6,925

578

7,341

-416

+42

 

21

417

32

565

150

24

1,164

586

+50

636

636

7,561

472

7,813

-252

+25

 

22

417

0

539

43

25

999

751

+50

801

802

8,363

422

8,235

128

-13

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

23

417

0

512

297

26

1,226

524

+50

574

574

8,937

394

8,629

308

-31

 

24

417

71

661

5

27

1,154

596

+42

638

636

9,573

716

9,345

228

-23

 

25

0

0

618

31

28

649

1,101

+25

1,126

1,125

10,698

1,135

10,480

218

-22

 

26

0

71

597

12

29

680

1,070

-13

1,057

1,058

11,756

1,028

11,508

248

-25

 

27

353

71

561

77

30

1,062

688

-31

657

661

12,417

491

11,999

418

-42

 

28

353

71

551

35

31

1,010

740

-23

717

717

13,134

745

12,744

390

-39

Col. 1 - Furnished by power company.

Col. 2 - Furnished by power company.

Col. 3 - Computed from index stations.           

Col. 4 - Computed increase in runoff based on quantitative
precipitation forecasts.

Col. 5 = Col. 1 + Col. 2 + Col. 3 + Col. 4.

Col. 6 = Design rate - Col. 5, when positive;
otherwise Col. 6 = 0.

Col. 7 = Col. 14 (4 days earlier).

Col. 8 = Design rate - Col. 5 + Col. 7, when
positive; otherwise Col. 8 = 0.

Col. 9 = Col. 7 from Table 9.

Col. 10 = Summation of Col. 9.

Col. 11 = Design rate - (Col. 9 + Col. 10 from Table 9), when positive; otherwise   Col. 11 = 0.

Col. 12 = Summation of Col. 11.

Col. 13 = Col. 10 - Col. 12.

Col. 14 = Col. 13 divided by  -10, limited to ±50.

 

 

Table 8.  New York City reservoir release design data—continued.
(River Master daily operation record)

[ft3/s, cubic feet per second; (ft3/s)-d, cubic feet per second days; Col., Column]

 

Advance estimate of discharge of Delaware River at Montague, New Jersey
exclusive of New York City reservoir releases

 

Computation of balancing adjustment

 

Date of
advance
estimate

Powerplant release
forecasts

Uncontrolled
runoff

Montague
date

Discharge
(ft3/s)

Indicated
deficiency

Balancing
adjustment
(ft3/s)

Directed
release
(ft3/s)

Adjusted directed
release

Actual
deficiency

Cumulative
difference
(ft3/s)-d

Balancing
adjustment
(ft3/s)

 

Lake
Wallenpaupack
(ft3/s)

Rio
Reservoir
(ft3/s)

Current
condition
(ft3/s)

Weather
adjustment
(ft3/s)

Daily
(ft3/s)

Cumulative
(ft3/s)-d

Daily
(ft3/s)

Cumulative
(ft3/s)-d

 

2002

Col. 1

Col. 2

Col. 3

Col. 4

 

Col. 5

Col. 6

Col. 7

Col. 8

Col. 9

Col. 10

Col. 11

Col. 12

Col. 13

Col. 14

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

July 29

353

0

552

44

Aug. 1

949

801

-22

779

780

13,914

800

13,544

370

-37

30

353

0

527

15

2

895

855

-25

830

831

14,745

761

14,305

440

-44

31

353

0

490

9

3

852

898

-42

856

855

15,600

825

15,130

470

-47

Aug.  1

0

0

450

24

4

474

1,276

-39

1,237

1,236

16,836

1,216

16,346

490

-49

2

0

71

434

5

5

510

1,240

-37

1,203

1,203

18,039

1,233

17,579

460

-46

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

193

0

454

27

6

674

1,076

-44

1,032

1,033

19,072

913

18,492

580

-50

4

193

0

429

61

7

683

1,067

-47

1,020

1,020

20,092

990

19,482

610

-50

5

193

0

461

33

8

687

1,063

-49

1,014

1,013

21,105

1,043

20,525

580

-50

6

193

0

491

0

9

684

1,066

-46

1,020

1,018

22,123

1,098

21,623

500

-50

7

193

0

438

0

10

631

1,119

-50

1,069

1,067

23,190

1,137

22,760

430

-43

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

0

71

390

0

11

461

1,289

-50

1,239

1,238

24,428

1,338

24,098

330

-33

9

0

43

352

0

12

395

1,355

-50

1,305

1,304

25,732

1,404

25,502

230

-23

10

0

43

324

5

13

372

1,378

-50

1,328

1,326

27,058

1,396

26,898

160

-16

11

0

43

318

0

14

361

1,389

-43

1,346

1,345

28,403

1,365

28,263

140

-14

12

0

0

327

2

15

329

1,421

-33

1,388

1,384

29,787

1,406

29,669

118

-12

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

13

0

0

333

12

16

345

1,405

-23

1,382

1,379

31,166

1,339

31,008

158

-16

14

0

0

281

19

17

300

1,450

-16

1,434

1,434

32,600

1,304

32,312

288

-29

15

0

0

302

6

18

308

1,442

-14

1,428

1,428

34,028

1,407

33,719

309

-31

16

0

0

327

25

19

352

1,398

-12

1,386

1,384

35,412

1,434

35,153

259

-26

17

0

0

348

36

20

384

1,366

-16

1,350

1,351

36,763

1,371

36,524

239

-24

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

18

45

0

322

47

21

414

1,336

-29

1,307

1,306

38,069

1,326

37,850

219

-22

19

0

0

326

29

22

355

1,395

-31

1,364

1,363

39,432

1,293

39,143

289

-29

20

0

0

359

0

23

359

1,391

-26

1,365

1,364

40,796

1,394

40,537

259

-26

21

0

71

377

27

24

475

1,275

-24

1,251

1,252

42,048

1,292

41,829

219

-22

22

0

0

331

221

25

552

1,198

-22

1,176

1,172

43,220

1,172

43,001

219

-22

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

23

0

0

337

51

26

388

1,362

-29

1,333

1,333

44,553

1,243

44,244

309

-31

24

417

0

410

348

27

1,175

575

-26

549

549

45,102

678

44,922

180

-18

25

417

0

470

0

28

887

863

-22

841

840

45,942

1,050

45,972

-30

+3

26

417

0

440

0

29

857

893

-22

871

869

46,811

729

46,701

110

-11

27

417

0

394

12

30

823

927

-31

896

897

47,708

527

47,228

480

-48

28

417

0

363

276

31

1,056

694

-18

676

676

48,384

486

47,714

670

-50

Col. 1 - Furnished by power company.

Col. 2 - Furnished by power company.

Col. 3 - Computed from index stations.

Col. 4 - Computed increase in runoff based on quantitative
precipitation forecasts.

Col. 5 = Col. 1 + Col. 2 + Col. 3 + Col. 4.

Col. 6 = Design rate - Col. 5, when positive;
otherwise Col. 6 = 0.

Col. 7 = Col. 14 (4 days earlier).

Col. 8 = Design rate - Col. 5 + Col. 7, when
positive; otherwise Col. 8 = 0.

Col. 9 = Col. 7 from Table 9.

Col. 10 = Summation of Col. 9.

Col. 11 = Design rate - (Col. 9 + Col. 10 from Table 9), when positive; otherwise   Col. 11 = 0.

Col. 12 = Summation of Col. 11.

Col. 13 = Col. 10 - Col. 12.

Col. 14 = Col. 13 divided by  -10, limited to ±50.

 

 

Table 8.  New York City reservoir release design data—continued  
(River Master daily operation record)

[ft3/s, cubic feet per second; (ft3/s)-d, cubic feet per second days; Col., Column]

 

Advance estimate of discharge of Delaware River at Montague, New Jersey
exclusive of New York City reservoir releases

 

Computation of balancing adjustment

 

Date of
advance
estimate

Powerplant release
forecasts

Uncontrolled
runoff

Montague
date

Discharge
(ft3/s)

Indicated
deficiency

Balancing
adjustment
(ft3/s)

Directed
release
(ft3/s)

Adjusted directed
release

Actual
deficiency

Cumulative
difference
(ft3/s)-d

Balancing
adjustment
(ft3/s)

 

Lake
Wallenpaupack
(ft3/s)

Rio
Reservoir
(ft3/s)

Current
condition
(ft3/s)

Weather
adjustment
(ft3/s)

Daily
(ft3/s)

Cumulative
(ft3/s)-d

Daily
(ft3/s)

Cumulative
(ft3/s)-d

 

2002

Col. 1

Col. 2

Col. 3

Col. 4

 

Col. 5

Col. 6

Col. 7

Col. 8

Col. 9

Col. 10

Col. 11

Col. 12

Col. 13

Col. 14

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Aug. 29

0

0

388

503

Sept. 1

891

859

+3

862

860

49,244

1,210

48,924

320

-32

30

0

0

615

10

2

625

1,125

-11

1,114

1,115

50,359

1,295

50,219

140

-14

31

417

0

511

0

3

928

822

-48

774

774

51,133

854

51,073

60

-6

Sept.   1

417

0

485

0

4

902

848

-50

798

796

51,929

906

51,979

-50

+5

2

417

0

460

55

5

932

818

-32

786

786

52,715

926

52,905

-190

+19

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

417

0

430

17

6

864

886

-14

872

873

53,588

853

53,758

-170

+17

4

417

0

480

0

7

897

853

-6

847

850

54,438

890

54,648

-210

+21

5

0

0

476

0

8

476

1,274

+5

1,279

1,280

55,718

1,430

56,078

-360

+36

6

0

0

432

0

9

432

1,318

+19

1,337

1,337

57,055

1,497

57,575

-520

+50

7

483

0

378

0

10

861

889

+17

906

905

57,960

935

58,510

-550

+50

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

611

0

364

8

11

983

767

+21

788

786

58,746

876

59,386

-640

+50

9

611

0

347

6

12

964

786

+36

822

822

59,568

872

60,258

-690

+50

10

611

0

317

1

13

929

821

+50

871

873

60,441

903

61,161

-720

+50

11

611

0

308

6

14

925

825

+50

875

874

61,315

834

61,995

-680

+50

12

418

0

293

33

15

744

1,006

+50

1,056

1,056

62,371

916

62,911

-540

+50

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

13

418

71

283

186

16

958

792

+50

842

842

63,213

432

63,343

-130

+13

14

615

0

274

1,476

17

2,365

0

+50

0

0

63,213

94

63,437

-224

+22

15

615

0

264

1,309

18

2,188

0

+50

0

0

63,213

419

63,856

-643

+50

16

615

0

632

22

19

1,269

481

+50

531

531

63,744

481

64,337

-593

+50

17

615

0

642

4

20

1,261

489

+13

502

502

64,246

522

64,859

-613

+50

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

18

615

71

558

0

21

1,244

506

+22

528

529

64,775

739

65,598

-823

+50

19

421

0

474

38

22

933

817

+50

867

870

65,645

960

66,558

-913

+50

20

0

0

416

1,752

23

2,168

0

+50

0

0

65,645

1,052

67,610

-1,965

+50

21

323

0

379

606

24

1,308

442

+50

492

493

66,138

523

68,133

-1,995

+50

22

484

0

637

149

25

1,270

480

+50

530

531

66,669

351

68,484

-1,815

+50

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

23

484

0

873

0

26

1,357

393

+50

443

440

67,109

530

69,014

-1,905

+50

24

484

32

604

0

27

1,120

630

+50

680

680

67,789

630

69,644

-1,855

+50

 

The estimated discharge at Montague was greater than the Montague design rate from September 28, 2002 to September 30, 2002.

 

Col. 1 - Furnished by power company.

Col. 2 - Furnished by power company.

Col. 3 - Computed from index stations.

Col. 4 - Computed increase in runoff based on quantitative
precipitation forecasts.

Col. 5 = Col. 1 + Col. 2 + Col. 3 + Col. 4.

Col. 6 = Design rate - Col. 5, when positive;
otherwise Col. 6 = 0.

Col. 7 = Col. 14 (4 days earlier).

Col. 8 = Design rate - Col. 5 + Col. 7, when
positive; otherwise Col. 8 = 0.

Col. 9 = Col. 7 from Table 9.

Col. 10 = Summation of Col. 9.

Col. 11 = Design rate - (Col. 9 + Col. 10 from Table 9), when positive; otherwise   Col. 11 = 0.

Col. 12 = Summation of Col. 11.

Col. 13 = Col. 10 - Col. 12.

Col. 14 = Col. 13 divided by  -10, limited to ±50.

 

 

Table 8.  New York City reservoir release design data—continued  
(River Master daily operation record)

[ft3/s, cubic feet per second; (ft3/s)-d, cubic feet per second days; Col., Column]

 

Advance estimate of discharge of Delaware River at Montague, New Jersey
exclusive of New York City reservoir releases

 

Computation of balancing adjustment

 

Date of
advance
estimate

Powerplant release
forecasts

Uncontrolled
runoff

Montague
date

Discharge
(ft3/s)

Indicated
deficiency

Balancing
adjustment
(ft3/s)

Directed
release
(ft3/s)

Adjusted directed
release

Actual
deficiency

Cumulative
difference
(ft3/s)-d

Balancing
adjustment
(ft3/s)

 

Lake
Wallenpaupack
(ft3/s)

Rio
Reservoir
(ft3/s)

Current
condition
(ft3/s)

Weather
adjustment
(ft3/s)

Daily
(ft3/s)

Cumulative
(ft3/s)-d

Daily
(ft3/s)

Cumulative
(ft3/s)-d

 

2002

Col. 1

Col. 2

Col. 3

Col. 4

 

Col. 5

Col. 6

Col. 7

Col. 8

Col. 9

Col. 10

Col. 11

Col. 12

Col. 13

Col. 14

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sept. 28

0

0

3,300

0

Oct.  1

3,300

0

+50

0

0

67,789

111

69,755

-1,966

+50

29

0

0

1,898

0

2

1,898

0

+50

0

0

67,789

444

70,199

-2,410

+50

30

137

0

1,468

20

3

1,625

125

+50

175

175

67,964

491

70,690

-2,726

+50

Oct.    1

361

40

1,071

49

4

1,521

229

+50

279

277

68,241

427

71,117

-2,826

+50

2

384

35

802

36

5

1,257

493

+50

543

543

68,784

243

71,360

-2,576

+50

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

416

70

789

114

6

1,389

361

+50

411

413

69,197

153

71,513

-2,316

+50

4

416

35

797

100

7

1,348

402

+50

452

454

69,651

324

71,837

-2,186

+50

5

420

35

755

23

8

1,233

517

+50

567

570

70,221

350

72,187

-1,966

+50

6

420

35

760

69

9

1,284

466

+50

516

517

70,738

437

72,624

-1,886

+50

7

484

35

633

35

10

1,187

563

+50

613

611

71,349

491

73,115

-1,766

+50

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

484

35

601

9

11

1,129

621

+50

671

672

72,021

102

73,217

-1,196

+50

9

484

0

620

34

12

1,138

612

+50

662

663

72,684

0

73,217

-533

+50

10

0

0

550

852

13

1,402

348

+50

398

398

73,082

0

73,217

-135

+14

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The estimated discharge at Montague was greater than the Montague design rate from October 14, 2002 to November 30, 2002.

 

 

 

Col. 1 - Furnished by power company.

Col. 2 - Furnished by power company.

Col. 3 - Computed from index stations.

Col. 4 - Computed increase in runoff based on quantitative
precipitation forecasts.

Col. 5 = Col. 1 + Col. 2 + Col. 3 + Col. 4.

Col. 6 = Design rate - Col. 5, when positive;
otherwise Col. 6 = 0.

Col. 7 = Col. 14 (4 days earlier).

Col. 8 = Design rate - Col. 5 + Col. 7, when
positive; otherwise Col. 8 = 0.

Col. 9 = Col. 7 from Table 9.

Col. 10 = Summation of Col. 9.

Col. 11 = Design rate - (Col. 9 + Col. 10 from Table 9), when positive; otherwise   Col. 11 = 0.

Col. 12 = Summation of Col. 11.

Col. 13 = Col. 10 - Col. 12.

Col. 14 = Col. 13 divided by  -10, limited to ±50.