*Extremes of temperature from observed readings of dry thermometers. 2 Mean of 8 a. m. +8 p. m. 1 Mean of 7 a. m. + 2 p. m. + 3 p. m. +9 p. m. 4. 2. The absence of a numeral indicates that the mean temperature has been obtained from daily readings of the maximum and minimum thermometers. A roman letter following the name of a station, or placed against the data in the body of the form, indicates the number of days missing from the record; for instance, 'n' denotes 14 days missing. |