Dew-point in degrees Fahrenheit, barometer pressure 29 inches ------+-------+-----+-----+-----+-----+-----+-----+-----+----- Air | Vapor |Depression of wet-bulb thermometer (_t_-_t´_) temp.| press.|-----+-----+-----+-----+-----+-----+-----+----- _t_ | _e_ | 1.0 | 2.0 | 3.0 | 4.0 | 5.0 | 6.0 | 7.0 | 8.0 ------+-------+-----+-----+-----+-----+-----+-----+-----+----- 30 | 0.164 | 27 | 25 | 22 | 18 | 14 | 9 | +3 | -5 31 | 0.172 | 29 | 26 | 23 | 20 | 16 | 11 | 5 | -2 32 | 0.180 | 30 | 27 | 24 | 21 | 17 | 13 | 8 | +1 33 | 0.187 | 31 | 28 | 25 | 22 | 19 | 15 | 10 | 3 34 | 0.195 | 32 | 29 | 27 | 24 | 20 | 16 | 12 | 6 | | | | | | | | | 35 | 0.203 | 33 | 30 | 28 | 25 | 22 | 18 | 14 | 8 36 | 0.211 | 34 | 31 | 29 | 26 | 23 | 20 | 15 | 11 37 | 0.219 | 35 | 32 | 30 | 27 | 24 | 21 | 17 | 13 38 | 0.228 | 36 | 33 | 31 | 28 | 26 | 23 | 19 | 14 39 | 0.237 | 37 | 34 | 32 | 29 | 27 | 24 | 21 | 16 | | | | | | | | | 40 | 0.247 | 38 | 35 | 33 | 31 | 28 | 25 | 22 | 18 41 | 0.256 | 39 | 37 | 34 | 32 | 29 | 26 | 23 | 20 42 | 0.266 | 40 | 38 | 35 | 33 | 30 | 28 | 25 | 21 43 | 0.277 | 41 | 39 | 36 | 34 | 31 | 29 | 26 | 23 44 | 0.287 | 42 | 40 | 38 | 35 | 32 | 30 | 27 | 24 | | | | | | | | | 45 | 0.298 | 43 | 41 | 39 | 36 | 34 | 31 | 29 | 26 46 | 0.310 | 44 | 42 | 40 | 37 | 35 | 32 | 30 | 27 47 | 0.322 | 45 | 43 | 41 | 39 | 36 | 34 | 31 | 28 48 | 0.334 | 46 | 44 | 42 | 40 | 37 | 35 | 32 | 30 49 | 0.347 | 47 | 45 | 43 | 41 | 39 | 36 | 34 | 31 | | | | | | | | | 50 | 0.360 | 48 | 46 | 44 | 42 | 40 | 37 | 35 | 32 51 | 0.373 | 49 | 47 | 45 | 43 | 41 | 39 | 36 | 34 52 | 0.387 | 50 | 48 | 46 | 44 | 42 | 40 | 37 | 35 53 | 0.402 | 51 | 49 | 47 | 45 | 43 | 41 | 39 | 36 54 | 0.417 | 52 | 50 | 49 | 47 | 44 | 42 | 40 | 38 55 | 0.432 | 53 | 52 | 50 | 48 | 46 | 43 | 41 | 39 56 | 0.448 | 54 | 53 | 51 | 49 | 47 | 45 | 43 | 40 57 | 0.465 | 55 | 54 | 52 | 50 | 48 | 46 | 44 | 42 58 | 0.482 | 56 | 55 | 53 | 51 | 49 | 47 | 45 | 43 59 | 0.499 | 57 | 56 | 54 | 52 | 50 | 48 | 46 | 44 | | | | | | | | | 60 | 0.517 | 58 | 57 | 55 | 53 | 51 | 49 | 47 | 45 61 | 0.536 | 59 | 58 | 56 | 54 | 52 | 51 | 49 | 46 62 | 0.555 | 60 | 59 | 57 | 55 | 54 | 52 | 50 | 48 63 | 0.575 | 61 | 60 | 58 | 56 | 55 | 53 | 51 | 49 64 | 0.595 | 62 | 61 | 59 | 58 | 56 | 54 | 52 | 50 | | | | | | | | |