56 REPORT—1904. 
TABLE I.—continued. 
1903 | Jan, | Feb. March) April | May | June | July | Aug. Sept. | Oct. | Nov. | Dec. | Year 
Rainfall in Inches. 
Ben NevisOb- | 33°45 | 36:24) 37:95) 8-36) 661) 6:44 | 13:26) 20:97| 10:72) 18-66) 17:27, 6-81 216-74 | 
servatory | | 
Fort William | 16°12} 17-04| 17-25) 3°81} 449) 297] 6-60] 11:95; 7:15] 13:05! 7:85! 5:611113-89 
Differences | 17:33! 19:20] 20:70; 4°55| 2°12; 3°47| 6°66 | 9°02 3°57 | 5°61) 9°42) 1:20 |102°85'! 
Number of Days 1 in. or more fell. 
Ben NevisOb-; 11 Sy hy TH 4 1 2 5 7 3 8 5 3 79 
servatory | | | 
Fort William | 5 7 7 0 1 0 1 3 1 4 | 1 251-32 
Differences . 6 6 10 4 | 0 2 4 4 2 4 4 1 47 
Number of Days 0:01 in. ov more fell. | 
Ben NevisOb-| 22 27 | 28 22 19 18 23 29 | 18 29 22 23 280 
servatory | 
Fort William} 21 26 31 13 16 12 21 27 21 29% | 23 20 259 
Differences . 1 1 | -3 9 3 6 2 2 =—3 | Ge 3 21 
Mean Rainband (Scale 0-8). 
Ben NevisOb-| 14 24 2-0 20 2°3 3°6 27 2°6 25 3°3 2°5 15 2°4 
servatory 
Fort William | 3°6 4°8 39 371 38 | 47 47 | 47 40 45 40 34 al 
Differences . 2°2 2-4 19 ie 15 i bf 2-0 2°1 15 1:2 15 19 1G 
Number of Hours of Bright Sunshine. 
Ben NevisOb-; 16 5 1l 40 79 137 76 | 23 67 16 21 18 509 
servatory 
Fort William | 22 10 39 120 135 178 141 91 126 36 21 15 934 
Differences . 6 5 28 80 56 41 65 | 68 59 20 0 +3 425 
Mean Hourly Velocity of Wind in Miles. 
Ben NevisOb-| 22 | 17 17 | 11 | 1l 9 11 12 20 18 9 19 15 
servatory | 
Percentage of Cloud. 
Ben NevisOb-| 88 98 95 80 82 74 86 95 80 96 89 93 87 
servatory 
Fort William | 73 88 85 74 73 68 75 83 66 89 80 77 78 
Differences .| 15 10 10 6 9 6 11 12 14 7 9 6 9 
The above table shows for 1903 the monthly mean and extreme 
temperature and pressure ; the amounts of rainfall ; the number of days 
of rainfall, and of the days on which it equalled or exceeded an inch ; 
the hours of sunshine ; the mean rainband ; the mean velocity in miles 
per hour of the wind at the top of the mountain ; and the mean cloud 
amount. The mean barometric pressures at Fort William are reduced to 
32° and sea-level ; but those at Ben Nevis Observatory to 32° only. 
At Fort William the mean atmospheric pressure was 29-760 inches, 
or 0-098 inch below the average of thirteen years ; whilst the mean at 
the top was 25-210 inches, or 0-090 inch below the average of twenty 
years. The mean difference for the two Observatories was 4:550 inches, 
the mean monthly difference varying from 4:621 inches in January to 
4-470 inches in August. At both places the mean for the year was con- 
siderably lower than any hitherto recorded, and only in June, September, 
and November were the monthly means above their normals. The means 
for October were much lower than any yet recorded for that month, the 
deficiency at Fort William being as much as 0°365 inch. At the top the 
absolutely highest pressure for the year was 25:°941 inches at 2 P.M. on 
May 26, and the lowest 23-916 inches at 5 a.m. on February 27. At Fort 
William the extremes were 30°572 inches at 10 a.m. on November 6, and 
