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Evaluation metrics | Geothermal reservoir-typea | Gas Geothermometers (new and existingb); NWGDB nw = 265 data (LIQDR: g1 = 178; VAPDR: g2 = 87) | |||||||||||
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Percent difference | Â | GasG1 | GasG2 | GasG3 | GasG4 | GasG5 | GasG6 | GasG7 | GasG8 | ND84c | AG85b | AG85d | AG85f |
Number of Samples (%—applicability) | |||||||||||||
Over-estimation (DIFF% ≤ 20%) | LIQDR | 103(60) | 111(63) | 99(58) | 105(63) | 93(55) | 101(58) | 97(58) | 101(58) | 70(39) | 57(32) | 55(31) | 67(38) |
VAPDR | 38(44) | 42(52) | 43(50) | 37(48) | 47(54) | 51(59) | 48(57) | 42(48) | 27(31) | 62(71) | 67(77) | 69(79) | |
Under-estimation (DIFF% ≤ 20%) | LIQDR | 56(32) | 56(32) | 52(30) | 50(30) | 57(34) | 54(31) | 53(31) | 56(32) | 94(53) | 104(58) | 117(66) | 88(49) |
VAPDR | 43(49) | 32(39) | 38(44) | 36(47) | 34(39) | 29(34) | 30(35) | 39(45) | 53(61) | 20(23) | 16(18) | 13(15) | |
Equal to BHT (DIFF% ≤ 1%) | LIQDR | 14(8) | 8(5) | 20(12) | 11(7) | 19(11) | 19(11) | 19(11) | 18(10) | 14(8) | 17(10) | 6(3) | 23(13) |
VAPDR | 6(7) | 7(9) | 5(6) | 4(5) | 6(7) | 6(7) | 7(8) | 6(7) | 7(8) | 5(6) | 4(5) | 5(6) |
Rankingc | Â | 1st | 2nd | 3rd | 4th | 5th | 6th | 7th | 8th | 9th | 10th | 11th | 12th |
DIFF% (± 20%)d | LIQDR | GasG8 | GasG3 | GasG1 | GasG7 | GasG4 | GasG2 | GasG5 | GasG6 | AG85d | AG85b | ND84c | AG85f |
168(96) | 164(96) | 164(95) | 160(95) | 157(95) | 163(93) | 156(92) | 159(91) | 156(88) | 154(87) | 152(85) | 152(85) | ||
VAPDR | A98c | GasG3 | GasG5 | GasG1 | ND84c | GasG2 | GasG4 | GasG8 | ND84b | GasG6 | AG85f | GasG7 | |
74(85) | 73(85) | 73(84) | 71(82) | 71(82) | 66(82) | 62(81) | 70(81) | 70(81) | 69(80) | 69(79) | 66(78) | ||
RMSE (°C) | LIQDR | GasG3 | GasG8 | GasG5 | GasG6 | GasG7 | GasG1 | GasG2 | GasG4 | AG85b | AG85d | AG85f | ND84c |
31.6 | 31.8 | 32.6 | 33.2 | 33.4 | 33.5 | 33.9 | 34.7 | 36.9 | 38.7 | 38.8 | 45.2 | ||
VAPDR | GasG3 | GasG1 | ND84c | A98c | GasG2 | ND84b | AG85f | GasG6 | GasG8 | GasG7 | GasG5 | GasG4 | |
35.6 | 38.0 | 38.9 | 39.8 | 39.8 | 40.1 | 41.0 | 41.9 | 42.1 | 43.4 | 44.8 | 49.0 | ||
MAE (°C) | LIQDR | GasG8 | GasG5 | GasG3 | GasG7 | GasG4 | GasG1 | GasG6 | GasG2 | AG85f | AG85b | AG85d | ND84c |
25.2 | 25.2 | 25.3 | 25.8 | 26.3 | 26.5 | 26.6 | 27.3 | 27.7 | 28.3 | 30.6 | 33.9 | ||
VAPDR | GasG3 | GasG1 | GasG2 | GasG6 | GasG5 | A98c | GasG8 | ND84c | ND84b | GasG7 | AG85f | GasG4 | |
27.6 | 29.3 | 30.2 | 30.4 | 31.3 | 31 | 32.1 | 32.7 | 33.8 | 33.8 | 34.0 | 39.2 | ||
MAPE (%) | LIQDR | GasG5 | GasG3 | GasG8 | GasG7 | GasG4 | GasG1 | GasG6 | GasG2 | AG85b | AG85f | AG85d | ND84c |
9.1 | 9.1 | 9.1 | 9.3 | 9.4 | 9.5 | 9.6 | 9.8 | 10.0 | 10.6 | 11.3 | 12.6 | ||
VAPDR | GasG3 | GasG1 | GasG2 | GasG6 | GasG5 | A98c | GasG8 | ND84c | GasG7 | AG85g | ND84b | GasG4 | |
10.6 | 11.2 | 11.5 | 11.8 | 11.9 | 11.9 | 12.4 | 12.7 | 12.8 | 12.9 | 13.1 | 15.4 | ||
Theil's U test | LIQDR | GasG3 | GasG8 | GasG5 | GasG7 | GasG6 | GasG1 | GasG4 | GasG2 | AG85b | AG85d | AG85f | ND84c |
VAPDR | GasG3 | GasG1 | ND84c | A98c | ND84b | AG85f | GasG2 | GasG6 | GasG8 | GasG7 | GasG5 | GasG4 |