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This chart shows readings of pressure gauges on gas tanks located in the Helen Lake shed. Readings are in PSI. The numbers in the new column shows the linear trend of psi used per day for each tank. An * in the new column indicates the start of a new gas tank. The S/N column lists the serial number of the new gas tank. An exclamation point by the serial number indicates that the empty gas tank is still in the shed. Two exclamation points by the serial number indicates that the empty gas tank is Kemp and needs to be called to be picked up. The Next Change row is a best guess based on previous usage on when the current and future tanks need changing. Tanks on hand lists the number of full tanks in the shed. Tanks needed is an estimate of amount to order for the next visit. Questions about this chart should go to Ankur Desai <adesai@psu.edu>.
Date | DOY | Days | N2 Nafion | New | N2 Pure | New | CO2 Low | New | CO2 High | New | CO2 Ref | New | S/N |
1/1/2001 | |||||||||||||
9/5/01 | 248 | 0 | 2500 | 2500 | 2600 | 1500 | 1750 | ||||||
9/17/01 | 260 | 12 | 2000 | 2400 | 2600 | 1500 | 1650 | ||||||
9/24/01 | 267 | 19 | 1650 | 2350 | 2600 | 1500 | 1600 | ||||||
9/29/01 | 272 | 24 | 1450 | 2300 | 2600 | 1450 | 1600 | ||||||
10/30/01 | 303 | 55 | 150 | -43 | |||||||||
10/30/01 | 303 | 55 | 2400 | * | |||||||||
11/6/01 | 310 | 62 | 2100 | 2150 | 2375 | 1400 | 1250 | ||||||
12/4/01 | 338 | 90 | 1000 | 1900 | 2250 | 1350 | 900 | ||||||
12/11/01 | 345 | 97 | 700 | -40 | 1900 | 2250 | 1350 | 900 | |||||
12/29/01 | 363 | 115 | 2500 | * | 1800 | 2200 | 1350 | 750 | T3441 | ||||
1/1/02 | |||||||||||||
1/8/02 | 8 | 125 | 2050 | 1800 | 2200 | 1350 | 700 | ||||||
1/23/02 | 23 | 140 | 1400 | 1700 | 2150 | 1350 | 600 | ||||||
2/8/02 | 39 | 156 | 750 | 1600 | 2100 | 1300 | 400 | ||||||
2/19/02 | 50 | 167 | 250 | -43 | |||||||||
2/19/02 | 50 | 167 | 2500 | * | 1600 | 2100 | 1400 | 400 | T952761518 | ||||
2/28/02 | 59 | 176 | 1860 | 1440 | 1900 | 1350 | 250 | ||||||
3/14/02 | 73 | 190 | 1400 | 1400 | 2000 | 1300 | 200 | ||||||
3/26/02 | 85 | 202 | 900 | 1400 | 2000 | 1300 | 0 | -8.5 | |||||
4/11/02 | 101 | 218 | 300 | -41 | |||||||||
4/11/02 | 101 | 218 | 2400 | * | 1300 | 2000 | 1300 | 2050 | * | CT0436 | |||
4/25/02 | 115 | 232 | 1700 | 1300 | 1900 | 1300 | 1900 | ||||||
5/9/02 | 129 | 246 | 1100 | -46 | 1200 | 1900 | 1400 | 1900 | |||||
6/11/02 | 162 | 279 | 2000 | * | 1090 | 1900 | 1350 | 1740 | ? | ||||
6/27/02 | 178 | 295 | 1300 | 1000 | 1900 | 1300 | 1500 | ||||||
7/24/02 | 205 | 322 | 200 | -42 | |||||||||
7/24/02 | 205 | 322 | 2600 | * | 900 | 1800 | 1300 | 1300 | T31778 | ||||
8/13/02 | 225 | 342 | 1600 | 800 | 1800 | 1300 | 1100 | ||||||
8/30/02 | 242 | 359 | 900 | 650 | 1800 | 1300 | 1000 | ||||||
9/10/02 | 253 | 370 | 400 | -45 | |||||||||
9/10/02 | 253 | 370 | 2600 | * | 600 | 1800 | 1300 | 900 | T32279 | ||||
9/26/02 | 269 | 386 | 1700 | 500 | 1700 | 1200 | 700 | ||||||
10/8/02 | 281 | 398 | 1200 | 500 | 1600 | 1200 | 600 | ||||||
10/28/02 | 301 | 418 | 400 | -45 | |||||||||
10/28/02 | 301 | 418 | 2400 | * | 400 | 1600 | 1200 | 500 | 068106 | ||||
11/12/02 | 316 | 433 | 1800 | 400 | 1600 | 1100 | 300 | ||||||
11/16/02 | 320 | 437 | 300 | -4.8 | 200 | -8.3 | |||||||
11/16/02 | 320 | 437 | 1450 | 2200 | * | 1500 | 1100 | 2100 | * | ||||
12/6/02 | 340 | 457 | 600 | -47 | |||||||||
12/6/02 | 340 | 457 | 2400 | * | 2200 | 1500 | 1100 | 1900 | 201613 | ||||
12/16/02 | 350 | 467 | 1800 | 2000 | 1400 | 1100 | 1800 | ||||||
1/1/03 | |||||||||||||
1/7/03 | 7 | 489 | 900 | 2000 | 1400 | 1100 | 1700 | ||||||
1/14/03 | 14 | 496 | 600 | 2000 | 1400 | 1100 | 1600 | ||||||
1/24/03 | 24 | 506 | 150 | -45 | |||||||||
1/24/03 | 24 | 506 | 2400 | * | 1900 | 1400 | 1100 | 1500 | AGAC152228 | ||||
2/6/03 | 37 | 519 | 1700 | 1800 | 1300 | 1100 | 1400 | ||||||
2/13/03 | 44 | 526 | 1500 | 1800 | 1300 | 1000 | 1400 | ||||||
2/24/03 | 55 | 537 | 1000 | 1700 | 1300 | 1000 | 1200 | ||||||
3/13/03 | 72 | 554 | 300 | -43 | 1700 | 1300 | 1000 | 1200 | |||||
3/13/03 | 72 | 554 | 2500 | * | 1650 | 1300 | 1000 | 1100 | T3374 | ||||
3/27/03 | 86 | 568 | 1800 | 1600 | 1300 | 1000 | 1000 | ||||||
4/10/03 | 100 | 582 | 1200 | 1600 | 1300 | 1000 | 900 | ||||||
4/22/03 | 112 | 594 | 600 | 1500 | 1300 | 900 | 800 | ||||||
5/2/03 | 122 | 604 | 200 | -46 | |||||||||
5/2/03 | 122 | 604 | 2600 | * | 1400 | 1300 | 900 | 700 | 352855 | ||||
5/12/03 | 132 | 614 | 2100 | 1400 | 1300 | 900 | 600 | ||||||
5/30/03 | 150 | 632 | 200 | -8.7 | |||||||||
5/30/03 | 150 | 632 | 1400 | -42 | 1300 | 1300 | -1.9 | 900 | -0.9 | 2300 | * | C55134N | |
7/3/03 | 184 | 666 | 1200 | 1200 | 2000 | * | 2100 | * | 2100 | * | CC104174,CC573,CC37753 | ||
7/18/03 | 199 | 681 | 600 | -40 | |||||||||
7/18/03 | 199 | 681 | 2700 | * | 1100 | 1900 | 2000 | 1850 | T93634 | ||||
7/31/03 | 212 | 694 | 2100 | 1100 | 1900 | 2000 | 1700 | ||||||
8/15/03 | 227 | 709 | 1600 | 1000 | 1900 | 2000 | 1500 | ||||||
9/4/03 | 247 | 729 | 600 | 900 | 1800 | 1900 | 1200 | ||||||
9/17/03 | 260 | 742 | 200 | -42 | |||||||||
9/17/03 | 260 | 742 | 2650 | * | 800 | 1700 | 1900 | 1000 | |||||
9/30/03 | 273 | 755 | 1900 | 800 | 1600 | 1800 | 700 | ||||||
10/14/03 | 287 | 769 | 1400 | 700 | 1550 | 1900 | 600 | ||||||
11/8/03 | 312 | 794 | 100 | -48 | 1700 | -2.6 | 0 | -16 | |||||
11/8/03 | 312 | 794 | 1600 | * | 500 | 1300 | 2050 | * | 1700 | * | T584262, C55134N | ||
11/10/03 | 314 | 796 | 1400 | 450 | 1300 | 2050 | 1700 | ||||||
12/1/03 | 335 | 817 | 500 | -46 | 400 | 1200 | 2050 | 1400 | |||||
12/12/03 | 346 | 828 | 0 | ||||||||||
12/18/03 | 352 | 834 | 2400 | * | 350 | 1150 | 2000 | 1150 | AGAC84830 | ||||
1/1/04 | |||||||||||||
1/7/04 | 7 | 854 | 200 | -4.7 | TX69185 | ||||||||
1/7/04 | 7 | 854 | 1600 | 2400 | * | 1100 | 2000 | 900 | |||||
1/27/04 | 27 | 874 | 800 | 2300 | 1000 | 2000 | 600 | ||||||
2/22/04 | 53 | 900 | 0 | -37 | 2000 | -0.6 | 200 | -14 | AGAC84830, CC5134N, CC573 | ||||
2/23/04 | 54 | 901 | 2450 | * | 2150 | 900 | 850 | * | 2050 | * | 344356, SG3553, C55134N | ||
3/26/04 | 86 | 933 | 1100 | 2100 | 800 | 800 | 1800 | ||||||
4/15/04 | 106 | 953 | 300 | -41 | |||||||||
4/15/04 | 106 | 953 | 2600 | * | 2000 | 750 | 800 | 1600 | |||||
4/30/04 | 121 | 968 | 1800 | 1900 | 700 | 800 | 1450 | ||||||
5/20/04 | 141 | 988 | 1000 | -45 | 1850 | 600 | 800 | 1350 | |||||
6/14/04 | 166 | 1013 | 2600 | * | 1700 | 400 | -4.5 | 750 | -0.7 | 1000 | -9.1 | ? | |
6/16/04 | 168 | 1015 | 2550 | 1700 | 2000 | * | 2000 | * | 2000 | * | CC220, CC42679, CC56844 | ||
6/19/04 | 171 | 1018 | 2400 | 1650 | 1900 | 2000 | 1950 | ||||||
7/1/04 | 183 | 1030 | 1900 | 1600 | 1800 | 2000 | 1800 | ||||||
7/15/04 | 197 | 1044 | 1300 | 1500 | 1650 | 1900 | 1600 | ||||||
7/20/04 | 202 | 1049 | 1100 | 1500 | 1600 | 1900 | 1500 | ||||||
8/4/04 | 217 | 1064 | 400 | -43 | 1400 | 1450 | 1800 | 1350 | |||||
8/10/04 | 223 | 1070 | 2650 | * | 1400 | 1400 | 1750 | 1200 | 1495517Y | ||||
8/23/04 | 236 | 1083 | 2050 | 1300 | 1700 | 1000 | |||||||
9/15/04 | 259 | 1106 | 1100 | 1200 | 1200 | 1650 | 700 | ||||||
10/1/04 | 275 | 1122 | 400 | -43 | |||||||||
10/1/04 | 275 | 1122 | 2600 | * | 1100 | 1000 | 1550 | 400 | |||||
10/16/04 | 290 | 1137 | 900 | -8.6 | 1500 | -4.3 | 200 | -15 | |||||
10/16/04 | 290 | 1137 | 2100 | * | 2100 | * | 2300 | * | AGAC122463, C39453, AGAC119588 | ||||
11/5/04 | 310 | 1157 | 950 | 900 | 2100 | 2100 | 2100 | ||||||
11/22/04 | 327 | 1174 | 250 | -45 | |||||||||
11/22/04 | 327 | 1174 | 2250 | * | 800 | 2000 | 2100 | 2000 | TN1196 | ||||
12/13/04 | 348 | 1195 | 1400 | 700 | 1900 | 2000 | 1750 | ||||||
1/1/05 | |||||||||||||
1/4/05 | 4 | 1217 | 500 | -41 | |||||||||
1/4/05 | 4 | 1217 | 2400 | * | 500 | 1800 | 1900 | 1500 | T952761588 | ||||
1/28/05 | 28 | 1241 | 1400 | 400 | 1800 | 1900 | 1400 | ||||||
2/17/05 | 48 | 1261 | 550 | -42 | |||||||||
2/17/05 | 48 | 1261 | 2500 | * | 300 | 1800 | 1800 | 1200 | T203955 | ||||
3/14/05 | 73 | 1286 | 150 | -5.3 | |||||||||
3/14/05 | 73 | 1286 | 1350 | 2400 | * | 1750 | 1800 | 1050 | TCF0308 | ||||
3/29/05 | 88 | 1301 | 700 | 2400 | 1700 | 1800 | 1000 | ||||||
4/19/05 | 109 | 1322 | 0 | 500 | -5.3 | 0 | -10 | ||||||
4/19/05 | 109 | 1322 | 2700 | * | 2200 | 550 | 1000 | * | 450 | * | T3374, C55134N, AGAC122467 | ||
5/6/05 | 126 | 1339 | 1850 | 2200 | 0 | -7.7 | 0 | -59 | 0 | -26 | |||
5/24/05 | 144 | 1357 | 1000 | 2200 | 0 | 0 | 0 | ||||||
5/30/05 | 150 | 1363 | 600 | 2150 | 1600 | * | 1700 | * | 1600 | * | CA02991,CC42710,CA01548 | ||
6/9/05 | 160 | 1373 | 300 | -48 | |||||||||
6/9/05 | 160 | 1373 | 2700 | * | 2150 | 1550 | 1700 | 1500 | |||||
6/20/05 | 171 | 1384 | 2150 | 2100 | 1500 | 1700 | 1400 | ||||||
7/18/05 | 199 | 1412 | 1000 | 2000 | 1400 | 1600 | 900 | ||||||
7/29/05 | 210 | 1423 | 500 | -43 | |||||||||
7/29/05 | 210 | 1423 | 2700 | * | 1900 | 1300 | 1600 | 800 | AGAC122683 | ||||
8/11/05 | 223 | 1436 | 2150 | 1900 | 1250 | 1600 | 600 | ||||||
9/19/05 | 262 | 1475 | 500 | -42 | 200 | -13 | |||||||
9/19/05 | 262 | 1475 | 2800 | * | 1700 | 1100 | 1500 | ||||||
10/4/05 | 277 | 1490 | 2000 | 1600 | 1000 | 1500 | 0 | ||||||
10/27/05 | 300 | 1513 | 850 | 1400 | 900 | 1400 | 2300 | * | C72049 | ||||
11/24/05 | 328 | 1541 | 0 | -43 | |||||||||
11/24/05 | 328 | 1541 | 2500 | * | 900 | 800 | 1400 | 2050 | 069010 | ||||
12/22/05 | 356 | 1569 | 1100 | 600 | 700 | 1300 | 1800 | ||||||
Current Rate (psi/day) | -50 | -5.7 | -4.5 | -1.9 | -8.9 | ||||||||
Avg. Rate (psi/day) | -44 | -5.1 | -4.5 | -1.9 | -8.9 | ||||||||
Days until change from: | 12/22/05 | 16 | 78 | 90 | 517 | 168 | |||||||
Next Change | 1/7/06 | 3/10/06 | 3/21/06 | 5/22/07 | 6/8/06 | ||||||||
2/24/06 | 6/2/07 | 8/19/07 | 8/22/10 | 2/20/07 | |||||||||
4/13/06 | |||||||||||||
5/31/06 | |||||||||||||
7/18/06 | |||||||||||||
Tanks on hand | 12/22/2005 | 5 | AGA | 1 | AGA | 1 | NOAA | 1 | NOAA | 1 | AGA | ||
Tanks needed | 0 | 0 | 0 | 0 | 0 | ||||||||
Empty tanks on site | 1 | 0 | 0 | 0 | 0 | ||||||||
Empty tanks at Kemp/Rhinelander | 0 | 0 | 0 | 0 | 1 | PSU | |||||||
Full tanks at Kemp/Rhinelander | 0 | 0 | 0 | 0 | 0 |