computation of td from q lev pressure tempera. sp hum dew pt 1 1011.0 23.0 .0170 22.5 2 1000.0 22.7 .0164 21.8 3 955.4 22.0 .0155 20.1 4 950.0 21.8 .0155 20.0 5 900.0 18.4 .0143 17.9 6 850.0 13.2 .0116 13.2 7 816.2 15.6 .0119 13.5 8 800.0 12.4 .0112 12.3 9 782.4 11.3 .0106 11.1 10 750.0 9.9 .0101 9.7 11 722.4 8.8 .0097 8.6 12 700.0 7.4 .0091 7.2 13 687.1 6.0 .0080 5.1 14 660.5 5.9 .0068 2.2 15 655.1 5.7 .0066 1.7 16 650.0 5.3 .0064 1.1 17 641.2 4.6 .0062 .5 18 600.0 1.1 .0055 -2.0 19 594.3 .6 .0054 -2.4 20 578.1 -.6 .0057 -2.0 21 566.3 -1.2 .0051 -3.8 22 550.0 -1.9 .0022 -13.3 23 544.6 -2.5 .0020 -14.4 24 534.9 -3.9 .0020 -14.6 25 528.2 -4.7 .0028 -11.1 26 517.7 -4.7 .0025 -12.5 27 508.9 -5.7 .0020 -15.2 28 500.0 -6.0 .0007 -26.2 29 493.4 -6.4 .0008 -25.0 30 477.9 -8.5 .0012 -21.2 31 468.7 -9.6 .0027 -12.8 32 450.0 -11.4 .0017 -18.2 33 444.2 -12.1 .0015 -19.6 34 400.0 -17.9 .0013 -22.2 35 390.3 -18.5 .0006 -30.1 36 382.5 -19.5 .0005 -32.0 37 369.5 -21.6 .0006 -30.6 38 361.5 -22.0 .0004 -34.6 39 350.0 -24.0 .0003 -37.5 computation of q from td lev pressure tempera. dew pt sp hum 1 1011.0 23.0 22.5 .0169 2 1000.0 22.7 21.8 .0163 3 955.4 22.0 20.1 .0154 4 950.0 21.8 20.0 .0154 5 900.0 18.4 17.9 .0142 6 850.0 13.2 13.2 .0111 7 816.2 15.6 13.5 .0118 8 800.0 12.4 12.3 .0112 9 782.4 11.3 11.1 .0105 10 750.0 9.9 9.7 .0100 11 722.4 8.8 8.6 .0096 12 700.0 7.4 7.2 .0090 13 687.1 6.0 5.1 .0080 14 660.5 5.9 2.2 .0068 15 655.1 5.7 1.7 .0066 16 650.0 5.3 1.1 .0064 17 641.2 4.6 .5 .0062 18 600.0 1.1 -2.0 .0055 19 594.3 .6 -2.4 .0054 20 578.1 -.6 -2.0 .0057 21 566.3 -1.2 -3.8 .0051 22 550.0 -1.9 -13.3 .0022 23 544.6 -2.5 -14.4 .0020 24 534.9 -3.9 -14.6 .0020 25 528.2 -4.7 -11.1 .0028 26 517.7 -4.7 -12.5 .0025 27 508.9 -5.7 -15.2 .0020 28 500.0 -6.0 -26.2 .0007 29 493.4 -6.4 -25.0 .0008 30 477.9 -8.5 -21.2 .0012 31 468.7 -9.6 -12.8 .0027 32 450.0 -11.4 -18.2 .0017 33 444.2 -12.1 -19.6 .0015 34 400.0 -17.9 -22.2 .0013 35 390.3 -18.5 -30.1 .0006 36 382.5 -19.5 -32.0 .0005 37 369.5 -21.6 -30.6 .0006 38 361.5 -22.0 -34.6 .0004 39 350.0 -24.0 -37.5 .0003 computation of rh from td lev pressure tempera. dew pt re hum 1 1011.0 23.0 22.5 97. 2 1000.0 22.7 21.8 94. 3 955.4 22.0 20.1 89. 4 950.0 21.8 20.0 89. 5 900.0 18.4 17.9 97. 6 850.0 13.2 13.2 100. 7 816.2 15.6 13.5 87. 8 800.0 12.4 12.3 99. 9 782.4 11.3 11.1 98. 10 750.0 9.9 9.7 99. 11 722.4 8.8 8.6 98. 12 700.0 7.4 7.2 98. 13 687.1 6.0 5.1 94. 14 660.5 5.9 2.2 77. 15 655.1 5.7 1.7 75. 16 650.0 5.3 1.1 74. 17 641.2 4.6 .5 75. 18 600.0 1.1 -2.0 79. 19 594.3 .6 -2.4 80. 20 578.1 -.6 -2.0 90. 21 566.3 -1.2 -3.8 82. 22 550.0 -1.9 -13.3 36. 23 544.6 -2.5 -14.4 34. 24 534.9 -3.9 -14.6 37. 25 528.2 -4.7 -11.1 55. 26 517.7 -4.7 -12.5 48. 27 508.9 -5.7 -15.2 40. 28 500.0 -6.0 -26.2 14. 29 493.4 -6.4 -25.0 17. 30 477.9 -8.5 -21.2 28. 31 468.7 -9.6 -12.8 68. 32 450.0 -11.4 -18.2 53. 33 444.2 -12.1 -19.6 49. 34 400.0 -17.9 -22.2 66. 35 390.3 -18.5 -30.1 31. 36 382.5 -19.5 -32.0 28. 37 369.5 -21.6 -30.6 40. 38 361.5 -22.0 -34.6 27. 39 350.0 -24.0 -37.5 24. computation of td from rh lev pressure tempera. re hum dew pt 1 1011.0 23.0 97. 22.5 2 1000.0 22.7 94. 21.7 3 955.4 22.0 89. 20.0 4 950.0 21.8 89. 20.0 5 900.0 18.4 97. 17.8 6 850.0 13.2 100. 13.1 7 816.2 15.6 87. 13.4 8 800.0 12.4 99. 12.2 9 782.4 11.3 98. 11.0 10 750.0 9.9 99. 9.7 11 722.4 8.8 98. 8.5 12 700.0 7.4 98. 7.1 13 687.1 6.0 94. 5.0 14 660.5 5.9 77. 2.2 15 655.1 5.7 75. 1.6 16 650.0 5.3 74. 1.1 17 641.2 4.6 75. .4 18 600.0 1.1 79. -2.1 19 594.3 .6 80. -2.4 20 578.1 -.6 90. -2.1 21 566.3 -1.2 82. -3.9 22 550.0 -1.9 36. -13.3 23 544.6 -2.5 34. -14.5 24 534.9 -3.9 37. -14.7 25 528.2 -4.7 55. -11.1 26 517.7 -4.7 48. -12.6 27 508.9 -5.7 40. -15.2 28 500.0 -6.0 14. -26.2 29 493.4 -6.4 17. -25.0 30 477.9 -8.5 28. -21.2 31 468.7 -9.6 68. -12.8 32 450.0 -11.4 53. -18.2 33 444.2 -12.1 49. -19.7 34 400.0 -17.9 66. -22.3 35 390.3 -18.5 31. -30.2 36 382.5 -19.5 28. -32.1 37 369.5 -21.6 40. -30.7 38 361.5 -22.0 27. -34.7 39 350.0 -24.0 24. -37.6 computation of q from rh lev pressure tempera. re hum sp hum 1 1011.0 23.0 97. .0169 2 1000.0 22.7 94. .0163 3 955.4 22.0 89. .0154 4 950.0 21.8 89. .0154 5 900.0 18.4 97. .0142 6 850.0 13.2 100. .0111 7 816.2 15.6 87. .0118 8 800.0 12.4 99. .0112 9 782.4 11.3 98. .0105 10 750.0 9.9 99. .0100 11 722.4 8.8 98. .0096 12 700.0 7.4 98. .0090 13 687.1 6.0 94. .0080 14 660.5 5.9 77. .0068 15 655.1 5.7 75. .0066 16 650.0 5.3 74. .0064 17 641.2 4.6 75. .0062 18 600.0 1.1 79. .0055 19 594.3 .6 80. .0054 20 578.1 -.6 90. .0057 21 566.3 -1.2 82. .0051 22 550.0 -1.9 36. .0022 23 544.6 -2.5 34. .0020 24 534.9 -3.9 37. .0020 25 528.2 -4.7 55. .0028 26 517.7 -4.7 48. .0025 27 508.9 -5.7 40. .0020 28 500.0 -6.0 14. .0007 29 493.4 -6.4 17. .0008 30 477.9 -8.5 28. .0012 31 468.7 -9.6 68. .0027 32 450.0 -11.4 53. .0017 33 444.2 -12.1 49. .0015 34 400.0 -17.9 66. .0013 35 390.3 -18.5 31. .0006 36 382.5 -19.5 28. .0005 37 369.5 -21.6 40. .0006 38 361.5 -22.0 27. .0004 39 350.0 -24.0 24. .0003 computation of rh from q lev pressure tempera. sp hum re hum 1 1011.0 23.0 .0169 97. 2 1000.0 22.7 .0163 94. 3 955.4 22.0 .0154 89. 4 950.0 21.8 .0154 89. 5 900.0 18.4 .0142 97. 6 850.0 13.2 .0111 100. 7 816.2 15.6 .0118 87. 8 800.0 12.4 .0112 99. 9 782.4 11.3 .0105 98. 10 750.0 9.9 .0100 99. 11 722.4 8.8 .0096 98. 12 700.0 7.4 .0090 98. 13 687.1 6.0 .0080 94. 14 660.5 5.9 .0068 77. 15 655.1 5.7 .0066 75. 16 650.0 5.3 .0064 74. 17 641.2 4.6 .0062 75. 18 600.0 1.1 .0055 79. 19 594.3 .6 .0054 80. 20 578.1 -.6 .0057 90. 21 566.3 -1.2 .0051 82. 22 550.0 -1.9 .0022 36. 23 544.6 -2.5 .0020 34. 24 534.9 -3.9 .0020 37. 25 528.2 -4.7 .0028 55. 26 517.7 -4.7 .0025 48. 27 508.9 -5.7 .0020 40. 28 500.0 -6.0 .0007 14. 29 493.4 -6.4 .0008 17. 30 477.9 -8.5 .0012 28. 31 468.7 -9.6 .0027 68. 32 450.0 -11.4 .0017 53. 33 444.2 -12.1 .0015 49. 34 400.0 -17.9 .0013 66. 35 390.3 -18.5 .0006 31. 36 382.5 -19.5 .0005 28. 37 369.5 -21.6 .0006 40. 38 361.5 -22.0 .0004 27. 39 350.0 -24.0 .0003 24.