Table showing the Pressure of Saturated Aqueous Vapour in inches of Mercury at Latitude 45° for each degree Fahrenheit from -30° to 119°.

° Inch. ° Inch. ° Inch. ° Inch. ° Inches.
-30 0.0099 0 0.0440 30 0.1665 60 0.5192 90 1.4128
-29 0.0105 1 0.0461 31 0.1738 61 0.5379 91 1.4578
-28 0.0111 2 0.0482 32 0.1815 62 0.5572 92 1.5040
-27 0.0117 3 0.0504 33 0.1888 63 0.5771 93 1.5514
-26 0.0123 4 0.0527 34 0.1964 64 0.5976 94 1.6001
-25 0.0130 5 0.0551 35 0.2043 65 0.6187 95 1.6502
-24 0.0137 6 0.0577 36 0.2125 66 0.6405 96 1.7017
-23 0.0144 7 0.0604 37 0.2210 67 0.6630 97 1.7546
-22 0.0152 8 0.0632 38 0.2297 68 0.6862 98 1.8088
-21 0.0160 9 0.0661 39 0.2388 69 0.7101 99 1.8646
-20 0.0168 10 0.0691 40 0.2482 70 0.7347 100 1.922
-19 0.0177 11 0.0723 41 0.2579 71 0.7601 101 1.980
-18 0.0186 12 0.0756 42 0.2679 72 0.7862 102 2.041
-17 0.0196 13 0.0790 43 0.2783 73 0.8131 103 2.103
-16 0.0206 14 0.0825 44 0.2890 74 0.8409 104 2.166
-15 0.0217 15 0.0862 45 0.3001 75 0.8695 105 2.231
-14 0.0228 16 0.0901 46 0.3116 76 0.8989 106 2.298
-13 0.0239 17 0.0942 47 0.3235 77 0.9292 107 2.366
-12 0.0251 18 0.0985 48 0.3358 78 0.9604 108 2.437
-11 0.0263 19 0.1030 49 0.3485 79 0.9925 109 2.509
-10 0.0276 20 0.1076 50 0.3616 80 1.0255 110 2.583
- 9 0.0289 21 0.1124 51 0.3751 81 1.0595 111 2.659
- 8 0.0303 22 0.1174 52 0.3891 82 1.0945 112 2.736
- 7 0.0318 23 0.1226 53 0.4036 83 1.1305 113 2.817
- 6 0.0333 24 0.1282 54 0.4186 84 1.1675 114 2.898
- 5 0.0349 25 0.1339 55 0.4341 85 1.2056 115 2.982
- 4 0.0366 26 0.1399 56 0.4501 86 1.2447 116 3.067
- 3 0.0383 27 0.1461 57 0.4666 87 1.2850 117 3.156
- 2 0.0401 28 0.1526 58 0.4836 88 1.3264 118 3.246
- 1 0.0420 29 0.1594 59 0.5011 89 1.3690 119 3.338
Transcriber’s Note: Maps are clickable for larger versions.

ISOTHERMAL LINES SHOWING THE MEAN TEMPERATURE (FAHR.) OF THE GLOBE FOR JANUARY.

Published by the Royal Geographical Society in “Hints to Travellers.” 1921.

ISOTHERMAL LINES SHOWING THE MEAN TEMPERATURE (FAHR.) OF THE GLOBE FOR JULY.

Published by the Royal Geographical Society in “Hints to Travellers.” 1921.

ISOBARIC LINES AND PREVAILING WINDS OF THE GLOBE FOR JANUARY.

Published by the Royal Geographical Society in “Hints to Travellers.” 1921.

ISOBARIC LINES AND PREVAILING WINDS OF THE GLOBE FOR JULY.

Published by the Royal Geographical Society in “Hints to Travellers.” 1921.

MEAN ANNUAL RAINFALL OF THE GLOBE.

Published by the Royal Geographical Society in “Hints to Travellers.” 1921.