Hour. XX Meteorological Observations. Abstract of the Results of the Hourly Meteorological Observations taken at the Surveyor General's Office, Calcutta, in the month of March 1866. Hourly Means, &c. of the Observations and of the Hygrometrical elements dependent thereon.-(Continued.) Midnight. All the Hygrometrical elements are computed by the Greenwich Constants. Abstract of the Results of the Hourly Meteorological Observations taken at the Surveyor General's Office, Calcutta, in the month of March 1866. S. W. S. & N. S. W. & W. 13 137.0 14 140.0 S. & W. S. & N. S. &. S. W. Clear. Scuds from S.between 4 &7A.M. Clear, slightly foggy from 4 to 6 A. M. Clear. Clear to 2 A. M., overcast to 6 A. M., Clear, slightly foggy at 1 A. M. Clear to 7 A. M. i to 7 P. M., clear \i to 8 P. M., clear afterwards. Clear to 1 P. M., scatd. \i to 6 P. M., Scatd. i to 9 A. M., clear afterwards. 21 142.0 22 142.0 23 146.0 24 140.5 25 141.0 S. & S. W. Clear. Clear to 6 A. M., scatd. i to 5 P. M., overcast afterwards. Thin rain Lightning. and Thunder at 10 & 11 P. M. Overcast to 6 A. M., scatd. i to 8 P. M. over cast afterwards Thin rain at 11 P. M. i Cirri, i Strati, i Cumuli,i Cirro-strati, i Cumulo strati,i Nimbi, i Cirro cumuli. Abstract of the Results of the Hourly Meteorological Observations taken at the Surveyor General's Office, Calcutta, Meteorological Observations. xxiii Abstract of the Results of the Hourly Meteorological Observations taken at the Surveyor General's Office, Calcutta, in the month of March 1866. MONTHLY RESULTS. Mean height of the Barometer for the month,... Max. height of the Barometer occurred at 10 A. M. on the 12th, Mean of the daily Max. Pressures, Ditto ditto Min. ditto Mean daily range of the Barometer during the month, Mean Dry Bulb Thermometer for the month, 83.9 Max. Temperature occurred at 4 P. M. on the 22nd, 98.6 71.4 Extreme range of the Temperature during the month, 27.2 94.3 76.1 ... Mean daily range of the Temperature during the month,... 18.2 Mean Wet Bulb Thermometer for the month, 75.1 Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer, 8.8 68.9 ... Mean Weight of Vapour for the month Drizzled 2 days,-Max. fall of rain during 24 hours Prevailing direction of the Wind, Inches. Nil Nil S. & W. & S. W. Abstract of the Results of the Hourly Meteorological Observations taken at the Surveyor General's Office, Calcutta, in the month of March 1866. MONTHLY RESULTS. Tables shewing the number of days on which at a given hour any particular wind blew, together with the number of days on which at the same hour, when any particular wind was blowing, it rained. |