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MEAN VALUES AT THE BEN NEVIS AND 

 FORT-WILLIAM OBSERVATORIES. 



MONTHLY MEAN VALUES OF PRESSURE AND TEMPERATURE. 



Table I. — The mean Barometric Pressure, reduced to 32°, at Ben Nevis Observatory 

 for each month and year from January 1884 to December 1903. At the foot two 

 sets of mean values are given, the first for the 13 years 1891 to 1903 inclusive, during 

 which time the Fort- William Observatory was also in operation, and the second for the 

 whole period of 20 years. 



Table II. — The mean Barometric Pressure, reduced to 32° and sea-level, at Fort- 

 William Observatory for each month and year from the opening of the Observatory in 

 August 1890 to December 1903. At the foot are the mean values for the 13 

 complete years 1891 to 1903 inclusive. 



Tables III. and IV. — These tables contain similar dates for the Temperature at 

 the Ben Nevis and Fort- William Observatories. 



MONTHLY TOTALS OF RAINFALL AND SUNSHINE. 



Table V. — The total monthly and annual Rainfall at Ben Nevis from July 1884 to 

 December 1903. At the foot mean values are given for the 13 years 1891 to 1903, 

 and for the 19 complete years 1885 to 1903. 



Table VI. — The total monthly and annual Rainfall at Fort- William from August 

 1890 to December 1903. Mean values for the 13 complete years 1891 to 1903 are 

 given at the foot. 



Table VII. — The total monthly and annual amounts of Sunshine at Ben Nevis 

 from January 1884 to December 1903. The amount for January 1884 is interpolated, as 

 the record was incomplete for that month. At the foot mean values for the 13 years 1891 

 to 1903, and for the 20 years 1884 to 1903, are given. 



Table VIII. — The total monthly and annual amounts of Sunshine at Fort- William 

 from August 1890 to December 1903. Mean values for the 13 complete years 1891 to 

 1903 are given at the foot. 



HOURLY MEAN VALUES. 



Table IX. Barometer. — The mean hourly values for each month : 1st, at Ben 

 Nevis Observatory for the 20 years 1884 to 1903 inclusive ; 2nd, at Ben Nevis for the 

 13 years 1891 to 1903; and 3rd, at Fort- William for the same 13 years. The barometer 

 at Ben Nevis is reduced to 32° only ; that at Fort- William to 32° and sea-level. 



TRANS. ROY. SOC. EDIN. — VOL. XLIII. 3 P 



