Site Parameter Friday
March 16		 Saturday
March 17		 Sunday
March 18		 Monday
March 19		 Tuesday
March 20
JCK AF 655910.0 655910.0 655661.0 655425.0 655425.0
JCK FB 6761.31 6761.31 6761.30 6761.29 6761.29
JCK GD m m m m m
JCK MM 26.81 24.38 19.45 23.15 25.45
JCK MN 18.10 16.50 3.20 18.20 18.00
JCK MX 36.90 32.30 32.10 30.60 34.80
JCK PP -0.02 0.15 -0.04 0.07 0.06
JCK PU 13.77 13.92 13.88 13.95 14.01
JCK QD 629.37 628.89 628.22 627.37 627.62
JCK QU 629.37 628.89 502.68 508.39 627.62
JCK SP 8.88 9.08 9.12 9.17 9.32
JCK WZ m m m m m
PAL AF 1059515. 1053354. 1046940. 1040158. 1032106.
PAL FB 5611.07 5610.66 5610.23 5609.78 5609.25
PALI GD m m m m m
PALI MM 34.97 31.73 27.53 31.49 32.16
PALI MN 29.70 24.50 18.60 27.70 26.30
PALI MX 44.00 37.20 33.70 39.20 37.70
PALI PP 0.02 0.12 0.00 0.04 0.02
PALI PU 9.84 9.96 9.96 10.00 10.02
PALI QD 6818.44 6797.55 6784.07 6790.50 7454.76
PALI QU 3746.55 3691.38 3550.34 3245.70 3276.22
HEII GD m m m m m
HEII QD 7376.52 7376.23 7313.65 7329.73 7494.83
HEII QU 4304.63 4270.06 4079.92 3784.93 3316.29
HEN AF 81894.00 81958.00 81958.00 82088.00 82088.00
HEN FB 15.40 15.41 15.41 15.43 15.43
ISL AF 119682.0 119682.0 119610.0 119532.0 119458.0
ISL FB 6301.01 6301.01 6301.00 6300.99 6300.98
ISL MM 28.96 26.24 25.21 26.18 27.06
ISL MN 21.00 20.90 21.40 19.00 14.50
ISL MX 39.30 31.90 31.70 32.00 41.20
ISL QD 88.76 26.02 26.02 26.01 26.01
ISLI GD m m m m m
ISLI QD 492.94 489.83 493.78 491.58 491.79
ISLI QU 496.97 522.10 457.48 517.80 454.49
ISLI WZ m m m m m
GRS AF 13722.00 13731.00 13734.00 13737.00 13746.00
GRS FB 7205.23 7205.26 7205.27 7205.28 7205.31
GRS QD m m m m m
GRS QU 1.51 4.54 1.51 m m
REXI GD m m m m m
REXI QD 1989.63 1945.39 1876.96 1800.95 1730.79
REXI WZ m m m m m

JCK Jackson Dam and Lake on the Snake River near Moran Junction, Wyoming. Total active storage capacity is 847,000 acre-feet.
PAL Palisades Dam. Total active storage capacity is 1,200,000 acre-feet.
PALI Snake River near Irwin, Idaho
HEII Snake River near Heise, Idaho
HEN Henrys Lake Dam on Henrys Fork
ISL Island Park Dam. Total active storage capacity is 135,200 acre-feet.
ISLI Henrys Fork near Island Park, Idaho
GRS Grassy Lake, Wyoming. Total active storage capacity is 15,200 acre-feet.
REXI Henrys Fork near Rexburg, Idaho

Upper Snake 'Teacup' Diagram


Key to Parameter Codes
Missing or unavailable data values are represented by 'm'.

Bureau of Reclamation, Pacific Northwest Region Hydromet Program

Site Parameter Saturday
March 17		 Sunday
March 18		 Monday
March 19		 Tuesday
March 20		 Wednesday
March 21
JCK AF 655910.0 655661.0 655425.0 655425.0 655176.0
JCK FB 6761.31 6761.30 6761.29 6761.29 6761.28
JCK GD m m m m m
JCK MM 24.38 19.45 23.15 25.45 29.84
JCK MN 16.50 3.20 18.20 18.00 21.00
JCK MX 32.30 32.10 30.60 34.80 39.70
JCK PP 0.15 -0.04 0.07 0.06 0.02
JCK PU 13.92 13.88 13.95 14.01 14.03
JCK QD 628.89 628.22 627.37 627.62 627.80
JCK QU 628.89 502.68 508.39 627.62 502.26
JCK SP 9.08 9.12 9.17 9.32 9.50
JCK WZ m m m m m
PAL AF 1053354. 1046940. 1040158. 1032106. 1021113.
PAL FB 5610.66 5610.23 5609.78 5609.25 5608.52
PALI GD m m m m m
PALI MM 31.73 27.53 31.49 32.16 37.24
PALI MN 24.50 18.60 27.70 26.30 31.10
PALI MX 37.20 33.70 39.20 37.70 43.60
PALI PP 0.12 0.00 0.04 0.02 0.05
PALI PU 9.96 9.96 10.00 10.02 10.07
PALI QD 6797.55 6784.07 6790.50 7454.76 9012.92
PALI QU 3691.38 3550.34 3245.70 3276.22 3470.61
HEII GD m m m m m
HEII QD 7376.23 7313.65 7329.73 7494.83 9083.73
HEII QU 4270.06 4079.92 3784.93 3316.29 3541.42
HEN AF 81958.00 81958.00 82088.00 82088.00 81765.00
HEN FB 15.41 15.41 15.43 15.43 15.38
ISL AF 119682.0 119610.0 119532.0 119458.0 119380.0
ISL FB 6301.01 6301.00 6300.99 6300.98 6300.97
ISL MM 26.24 25.21 26.18 27.06 31.86
ISL MN 20.90 21.40 19.00 14.50 25.20
ISL MX 31.90 31.70 32.00 41.20 38.20
ISL QD 26.02 26.02 26.01 26.01 26.01
ISLI GD m m m m m
ISLI QD 489.83 493.78 491.58 491.79 492.61
ISLI QU 522.10 457.48 517.80 454.49 290.44
ISLI WZ m m m m m
GRS AF 13731.00 13734.00 13737.00 13746.00 13749.00
GRS FB 7205.26 7205.27 7205.28 7205.31 7205.32
GRS QD m m m m m
GRS QU 4.54 1.51 m m m
REXI GD m m m m m
REXI QD 1945.39 1876.96 1800.95 1730.79 1689.93
REXI WZ m m m m m

JCK Jackson Dam and Lake on the Snake River near Moran Junction, Wyoming. Total active storage capacity is 847,000 acre-feet.
PAL Palisades Dam. Total active storage capacity is 1,200,000 acre-feet.
PALI Snake River near Irwin, Idaho
HEII Snake River near Heise, Idaho
HEN Henrys Lake Dam on Henrys Fork
ISL Island Park Dam. Total active storage capacity is 135,200 acre-feet.
ISLI Henrys Fork near Island Park, Idaho
GRS Grassy Lake, Wyoming. Total active storage capacity is 15,200 acre-feet.
REXI Henrys Fork near Rexburg, Idaho

Upper Snake 'Teacup' Diagram


Key to Parameter Codes
Missing or unavailable data values are represented by 'm'.

Bureau of Reclamation, Pacific Northwest Region Hydromet Program

Site Parameter Sunday
March 18		 Monday
March 19		 Tuesday
March 20		 Wednesday
March 21		 Thursday
March 22
JCK AF 655661.0 655425.0 655425.0 655176.0 655910.0
JCK FB 6761.30 6761.29 6761.29 6761.28 6761.31
JCK GD m m m m m
JCK MM 19.45 23.15 25.45 29.84 34.77
JCK MN 3.20 18.20 18.00 21.00 30.40
JCK MX 32.10 30.60 34.80 39.70 40.50
JCK PP -0.04 0.07 0.06 0.02 0.87
JCK PU 13.88 13.95 14.01 14.03 14.90
JCK QD 628.22 627.37 627.62 627.80 629.50
JCK QU 502.68 508.39 627.62 502.26 999.56
JCK SP 9.12 9.17 9.32 9.50 10.03
JCK WZ m m m m m
PAL AF 1046940. 1040158. 1032106. 1021113. 1009197.
PAL FB 5610.23 5609.78 5609.25 5608.52 5607.72
PALI GD m m m m m
PALI MM 27.53 31.49 32.16 37.24 40.43
PALI MN 18.60 27.70 26.30 31.10 34.70
PALI MX 33.70 39.20 37.70 43.60 45.00
PALI PP 0.00 0.04 0.02 0.05 0.97
PALI PU 9.96 10.00 10.02 10.07 11.04
PALI QD 6784.07 6790.50 7454.76 9012.92 10141.23
PALI QU 3550.34 3245.70 3276.22 3470.61 4008.01
HEII GD m m m m m
HEII QD 7313.65 7329.73 7494.83 9083.73 10498.06
HEII QU 4079.92 3784.93 3316.29 3541.42 4364.91
HEN AF 81958.00 82088.00 82088.00 81765.00 82088.00
HEN FB 15.41 15.43 15.43 15.38 15.43
ISL AF 119610.0 119532.0 119458.0 119380.0 120206.0
ISL FB 6301.00 6300.99 6300.98 6300.97 6301.08
ISL MM 25.21 26.18 27.06 31.86 37.06
ISL MN 21.40 19.00 14.50 25.20 32.50
ISL MX 31.70 32.00 41.20 38.20 43.50
ISL QD 26.02 26.01 26.01 26.01 20.22
ISLI GD m m m m m
ISLI QD 493.78 491.58 491.79 492.61 498.53
ISLI QU 457.48 517.80 454.49 290.44 1077.82
ISLI WZ m m m m m
GRS AF 13734.00 13737.00 13746.00 13749.00 13778.00
GRS FB 7205.27 7205.28 7205.31 7205.32 7205.42
GRS QD m m m m m
GRS QU 1.51 m m m m
REXI GD m m m m m
REXI QD 1876.96 1800.95 1730.79 1689.93 1718.11
REXI WZ m m m m m

JCK Jackson Dam and Lake on the Snake River near Moran Junction, Wyoming. Total active storage capacity is 847,000 acre-feet.
PAL Palisades Dam. Total active storage capacity is 1,200,000 acre-feet.
PALI Snake River near Irwin, Idaho
HEII Snake River near Heise, Idaho
HEN Henrys Lake Dam on Henrys Fork
ISL Island Park Dam. Total active storage capacity is 135,200 acre-feet.
ISLI Henrys Fork near Island Park, Idaho
GRS Grassy Lake, Wyoming. Total active storage capacity is 15,200 acre-feet.
REXI Henrys Fork near Rexburg, Idaho

Upper Snake 'Teacup' Diagram


Key to Parameter Codes
Missing or unavailable data values are represented by 'm'.

Bureau of Reclamation, Pacific Northwest Region Hydromet Program

Site Parameter Monday
March 19		 Tuesday
March 20		 Wednesday
March 21		 Thursday
March 22		 Friday
March 23
JCK AF 655425.0 655425.0 655176.0 655910.0 656631.0
JCK FB 6761.29 6761.29 6761.28 6761.31 6761.34
JCK GD m m m m m
JCK MM 23.15 25.45 29.84 34.77 35.31
JCK MN 18.20 18.00 21.00 30.40 31.70
JCK MX 30.60 34.80 39.70 40.50 41.10
JCK PP 0.07 0.06 0.02 0.87 0.09
JCK PU 13.95 14.01 14.03 14.90 14.99
JCK QD 627.37 627.62 627.80 629.50 629.44
JCK QU 508.39 627.62 502.26 999.56 992.94
JCK SP 9.17 9.32 9.50 10.03 9.45
JCK WZ m m m m m
PAL AF 1040158. 1032106. 1021113. 1009197. 999185.
PAL FB 5609.78 5609.25 5608.52 5607.72 5607.04
PALI GD m m m m m
PALI MM 31.49 32.16 37.24 40.43 39.50
PALI MN 27.70 26.30 31.10 34.70 34.60
PALI MX 39.20 37.70 43.60 45.00 47.60
PALI PP 0.04 0.02 0.05 0.97 0.17
PALI PU 10.00 10.02 10.07 11.04 11.21
PALI QD 6790.50 7454.76 9012.92 10141.23 10154.75
PALI QU 3245.70 3276.22 3470.61 4008.01 5477.14
HEII GD m m m m m
HEII QD 7329.73 7494.83 9083.73 10498.06 10901.25
HEII QU 3784.93 3316.29 3541.42 4364.91 6223.54
HEN AF 82088.00 82088.00 81765.00 82088.00 82542.00
HEN FB 15.43 15.43 15.38 15.43 15.50
ISL AF 119532.0 119458.0 119380.0 120206.0 120278.0
ISL FB 6300.99 6300.98 6300.97 6301.08 6301.09
ISL MM 26.18 27.06 31.86 37.06 34.86
ISL MN 19.00 14.50 25.20 32.50 32.60
ISL MX 32.00 41.20 38.20 43.50 41.70
ISL QD 26.01 26.01 26.01 20.22 46.70
ISLI GD m m m m m
ISLI QD 491.58 491.79 492.61 498.53 524.77
ISLI QU 517.80 454.49 290.44 1077.82 789.96
ISLI WZ m m m m m
GRS AF 13737.00 13746.00 13749.00 13778.00 13784.00
GRS FB 7205.28 7205.31 7205.32 7205.42 7205.44
GRS QD m m m m m
GRS QU 1.51 4.54 1.51 m m
REXI GD m m m m m
REXI QD 1800.95 1730.79 1689.93 1718.11 2175.94
REXI WZ m m m m m

JCK Jackson Dam and Lake on the Snake River near Moran Junction, Wyoming. Total active storage capacity is 847,000 acre-feet.
PAL Palisades Dam. Total active storage capacity is 1,200,000 acre-feet.
PALI Snake River near Irwin, Idaho
HEII Snake River near Heise, Idaho
HEN Henrys Lake Dam on Henrys Fork
ISL Island Park Dam. Total active storage capacity is 135,200 acre-feet.
ISLI Henrys Fork near Island Park, Idaho
GRS Grassy Lake, Wyoming. Total active storage capacity is 15,200 acre-feet.
REXI Henrys Fork near Rexburg, Idaho

Upper Snake 'Teacup' Diagram


Key to Parameter Codes
Missing or unavailable data values are represented by 'm'.

Bureau of Reclamation, Pacific Northwest Region Hydromet Program

Site Parameter Tuesday
March 20		 Wednesday
March 21		 Thursday
March 22		 Friday
March 23		 Saturday
March 24
JCK AF 655425.0 655176.0 655910.0 656631.0 656868.0
JCK FB 6761.29 6761.28 6761.31 6761.34 6761.35
JCK GD m m m m m
JCK MM 25.45 29.84 34.77 35.31 30.24
JCK MN 18.00 21.00 30.40 31.70 25.70
JCK MX 34.80 39.70 40.50 41.10 33.40
JCK PP 0.06 0.02 0.87 0.09 0.13
JCK PU 14.01 14.03 14.90 14.99 15.12
JCK QD 627.62 627.80 629.50 629.44 630.66
JCK QU 627.62 502.26 999.56 992.94 750.14
JCK SP 9.32 9.50 10.03 9.45 9.67
JCK WZ m m m m m
PAL AF 1032106. 1021113. 1009197. 999185. 988974.
PAL FB 5609.25 5608.52 5607.72 5607.04 5606.34
PALI GD m m m m m
PALI MM 32.16 37.24 40.43 39.50 34.93
PALI MN 26.30 31.10 34.70 34.60 31.70
PALI MX 37.70 43.60 45.00 47.60 38.50
PALI PP 0.02 0.05 0.97 0.17 0.12
PALI PU 10.02 10.07 11.04 11.21 11.33
PALI QD 7454.76 9012.92 10141.23 10154.75 10184.39
PALI QU 3276.22 3470.61 4008.01 5477.14 5399.86
HEII GD m m m m m
HEII QD 7494.83 9083.73 10498.06 10901.25 10750.74
HEII QU 3316.29 3541.42 4364.91 6223.54 5966.16
HEN AF 82088.00 81765.00 82088.00 82542.00 82858.00
HEN FB 15.43 15.38 15.43 15.50 15.55
ISL AF 119458.0 119380.0 120206.0 120278.0 120278.0
ISL FB 6300.98 6300.97 6301.08 6301.09 6301.09
ISL MM 27.06 31.86 37.06 34.86 31.55
ISL MN 14.50 25.20 32.50 32.60 22.30
ISL MX 41.20 38.20 43.50 41.70 34.70
ISL QD 26.01 26.01 20.22 46.70 74.30
ISLI GD m m m m m
ISLI QD 491.79 492.61 498.53 524.77 543.23
ISLI QU 454.49 290.44 1077.82 789.96 702.55
ISLI WZ m m m m m
GRS AF 13746.00 13749.00 13778.00 13784.00 13793.00
GRS FB 7205.31 7205.32 7205.42 7205.44 7205.47
GRS QD m m m m m
GRS QU 4.54 1.51 m m m
REXI GD m m m m m
REXI QD 1730.79 1689.93 1718.11 2175.94 2829.56
REXI WZ m m m m m

JCK Jackson Dam and Lake on the Snake River near Moran Junction, Wyoming. Total active storage capacity is 847,000 acre-feet.
PAL Palisades Dam. Total active storage capacity is 1,200,000 acre-feet.
PALI Snake River near Irwin, Idaho
HEII Snake River near Heise, Idaho
HEN Henrys Lake Dam on Henrys Fork
ISL Island Park Dam. Total active storage capacity is 135,200 acre-feet.
ISLI Henrys Fork near Island Park, Idaho
GRS Grassy Lake, Wyoming. Total active storage capacity is 15,200 acre-feet.
REXI Henrys Fork near Rexburg, Idaho

Upper Snake 'Teacup' Diagram


Key to Parameter Codes
Missing or unavailable data values are represented by 'm'.

Bureau of Reclamation, Pacific Northwest Region Hydromet Program

Site Parameter Wednesday
March 21		 Thursday
March 22		 Friday
March 23		 Saturday
March 24		 Sunday
March 25
JCK AF 655176.0 655910.0 656631.0 656868.0 657116.0
JCK FB 6761.28 6761.31 6761.34 6761.35 6761.36
JCK GD m m m m m
JCK MM 29.84 34.77 35.31 30.24 27.01
JCK MN 21.00 30.40 31.70 25.70 22.90
JCK MX 39.70 40.50 41.10 33.40 34.10
JCK PP 0.02 0.87 0.09 0.13 0.06
JCK PU 14.03 14.90 14.99 15.12 15.18
JCK QD 627.80 629.50 629.44 630.66 630.96
JCK QU 502.26 999.56 992.94 750.14 755.99
JCK SP 9.50 10.03 9.45 9.67 9.90
JCK WZ m m m m m
PAL AF 1021113. 1009197. 999185. 988974. 978441.
PAL FB 5608.52 5607.72 5607.04 5606.34 5605.61
PALI GD m m m m m
PALI MM 37.24 40.43 39.50 34.93 32.39
PALI MN 31.10 34.70 34.60 31.70 28.40
PALI MX 43.60 45.00 47.60 38.50 39.40
PALI PP 0.05 0.97 0.17 0.12 0.14
PALI PU 10.07 11.04 11.21 11.33 11.47
PALI QD 9012.92 10141.23 10154.75 10184.39 10189.75
PALI QU 3470.61 4008.01 5477.14 5399.86 4998.80
HEII GD m m m m m
HEII QD 9083.73 10498.06 10901.25 10750.74 10684.30
HEII QU 3541.42 4364.91 6223.54 5966.16 5493.40
HEN AF 81765.00 82088.00 82542.00 82858.00 82795.00
HEN FB 15.38 15.43 15.50 15.55 15.54
ISL AF 119380.0 120206.0 120278.0 120278.0 120206.0
ISL FB 6300.97 6301.08 6301.09 6301.09 6301.08
ISL MM 31.86 37.06 34.86 31.55 26.00
ISL MN 25.20 32.50 32.60 22.30 18.50
ISL MX 38.20 43.50 41.70 34.70 34.70
ISL QD 26.01 20.22 46.70 74.30 74.29
ISLI GD m m m m m
ISLI QD 492.61 498.53 524.77 543.23 547.00
ISLI QU 290.44 1077.82 789.96 702.55 478.94
ISLI WZ m m m m m
GRS AF 13749.00 13778.00 13784.00 13793.00 13796.00
GRS FB 7205.32 7205.42 7205.44 7205.47 7205.48
GRS QD m m m m m
GRS QU 1.51 m m m m
REXI GD m m m m m
REXI QD 1689.93 1718.11 2175.94 2829.56 2556.48
REXI WZ m m m m m

JCK Jackson Dam and Lake on the Snake River near Moran Junction, Wyoming. Total active storage capacity is 847,000 acre-feet.
PAL Palisades Dam. Total active storage capacity is 1,200,000 acre-feet.
PALI Snake River near Irwin, Idaho
HEII Snake River near Heise, Idaho
HEN Henrys Lake Dam on Henrys Fork
ISL Island Park Dam. Total active storage capacity is 135,200 acre-feet.
ISLI Henrys Fork near Island Park, Idaho
GRS Grassy Lake, Wyoming. Total active storage capacity is 15,200 acre-feet.
REXI Henrys Fork near Rexburg, Idaho

Upper Snake 'Teacup' Diagram


Key to Parameter Codes
Missing or unavailable data values are represented by 'm'.

Bureau of Reclamation, Pacific Northwest Region Hydromet Program

Site Parameter Thursday
March 22		 Friday
March 23		 Saturday
March 24		 Sunday
March 25		 Monday
March 26
JCK AF 655910.0 656631.0 656868.0 657116.0 656868.0
JCK FB 6761.31 6761.34 6761.35 6761.36 6761.35
JCK GD m m m m m
JCK MM 34.77 35.31 30.24 27.01 25.88
JCK MN 30.40 31.70 25.70 22.90 19.70
JCK MX 40.50 41.10 33.40 34.10 32.00
JCK PP 0.87 0.09 0.13 0.06 0.00
JCK PU 14.90 14.99 15.12 15.18 15.18
JCK QD 629.50 629.44 630.66 630.96 630.23
JCK QU 999.56 992.94 750.14 755.99 505.20
JCK SP 10.03 9.45 9.67 9.90 9.99
JCK WZ m m m m m
PAL AF 1009197. 999185. 988974. 978441. 967244.
PAL FB 5607.72 5607.04 5606.34 5605.61 5604.83
PALI GD m m m m m
PALI MM 40.43 39.50 34.93 32.39 32.01
PALI MN 34.70 34.60 31.70 28.40 26.80
PALI MX 45.00 47.60 38.50 39.40 40.00
PALI PP 0.97 0.17 0.12 0.14 0.02
PALI PU 11.04 11.21 11.33 11.47 11.49
PALI QD 10141.23 10154.75 10184.39 10189.75 10070.73
PALI QU 4008.01 5477.14 5399.86 4998.80 4550.58
HEII GD m m m m m
HEII QD 10498.06 10901.25 10750.74 10684.30 10568.84
HEII QU 4364.91 6223.54 5966.16 5493.40 5048.68
HEN AF 82088.00 82542.00 82858.00 82795.00 82477.00
HEN FB 15.43 15.50 15.55 15.54 15.49
ISL AF 120206.0 120278.0 120278.0 120206.0 119980.0
ISL FB 6301.08 6301.09 6301.09 6301.08 6301.05
ISL MM 37.06 34.86 31.55 26.00 24.26
ISL MN 32.50 32.60 22.30 18.50 5.00
ISL MX 43.50 41.70 34.70 34.70 39.50
ISL QD 20.22 46.70 74.30 74.29 74.28
ISLI GD m m m m m
ISLI QD 498.53 524.77 543.23 547.00 553.13
ISLI QU 1077.82 789.96 702.55 478.94 278.86
ISLI WZ m m m m m
GRS AF 13778.00 13784.00 13793.00 13796.00 13798.00
GRS FB 7205.42 7205.44 7205.47 7205.48 7205.49
GRS QD m m m m m
GRS QU 14.62 3.03 4.54 m m
REXI GD m m m m m
REXI QD 1718.11 2175.94 2829.56 2556.48 2230.15
REXI WZ m m m m m

JCK Jackson Dam and Lake on the Snake River near Moran Junction, Wyoming. Total active storage capacity is 847,000 acre-feet.
PAL Palisades Dam. Total active storage capacity is 1,200,000 acre-feet.
PALI Snake River near Irwin, Idaho
HEII Snake River near Heise, Idaho
HEN Henrys Lake Dam on Henrys Fork
ISL Island Park Dam. Total active storage capacity is 135,200 acre-feet.
ISLI Henrys Fork near Island Park, Idaho
GRS Grassy Lake, Wyoming. Total active storage capacity is 15,200 acre-feet.
REXI Henrys Fork near Rexburg, Idaho

Upper Snake 'Teacup' Diagram


Key to Parameter Codes
Missing or unavailable data values are represented by 'm'.