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XYI. 
METEOROLOGICAL OBSERVATIONS TAKEN IN HERTFORDSHIRE 
IN THE YEAR 1903 . 
Ey John Hopkinson, E.L.S., E.G.S., Y.P. R. Met. Soc., 
Assoc. Inst. C. E. 
Read at Watford , 19 th April, 1904 . 
There has been no change in the Hertfordshire meteorological 
stations since the year 1898, and the observations in 1903 have 
been taken as hitherto. The hour of observation is 9 a.m. All 
the observations are entered to the same day except those of the 
maximum temperature and the rainfall, which are entered to the 
previous day. Shade temperatures only are given; those for 
Eennington, Berkhamsted, and St. Albans being from thermometers 
in Stevenson screens, and for New Barnet from thermometers under 
a Glaisher stand. 
Eor information as to the stations reference should be made to 
my paper on “The Climate of Hertfordshire” in the previous 
volume of our ‘Transactions’ (pp. 125-126). The averages with 
which the results for 1903 are compared are those for the twelve 
years 1887-1898 as given in that paper, except for the rainfall, 
which is compared with the average for the county for the sixty 
years 1840-1899, given at p. 132 of the same paper. 
Table I. — Results of Climatological Observations taken in 
Hertfordshire in the Year 1903. 
Stations 
Temperature of the Air 
Humidity 
Cloud, 0-10 
Rain 
Means 
Extremes 
Amount 
Days 
Mean 
Min. 
Max. 
Range 
Min. 
Max. 
O 
O 
O 
O 
0 
O 
% 
ins. 
Bennington . 
48 "6 
41-8 
55 ’i 
I 3'3 
20-9 
84-0 
83 
7'4 
35-58 
219 
Berkhamsted. 
487 
41-4 
58-9 
I 4.‘5 
20-4 
82-9 
83 
7-2 
37-88 
195 
St. Albans. 
487 
423 
55 -i 
12-8 
22-3 
83-2 
81 
7-1 
3875 
192 
New Barnet .... 
49 *i 
40 'O 
58 -i 
181 
18 *5 
8y8 
81 
6-8 
38-54 
175 
County. 
48*8 
4 i '4 
56-1 
147 
iS *5 
8y8 
82 
7-1 
37-69 
195 
The year was rather warm on the whole, the mean temperature 
being half a degree above the average. The mean daily range was 
l°-2 below the average, owing almost entirely to the warmth of 
the nights. The air, at 9 a.m., was of average humidity. The 
sky, at the same hour, was rather more cloudy than usual, there 
were more sunless days, and the sun shone brightly for about 
35 minutes a day less than its average duration. The rainfall was 
much the greatest recorded since the year 1852, and the wet days 
