+--------------------+-----+-----+-----+-----+-----+------+------+------+------+------+------+-------+
| Hour. | 0-2.| 2-4.| 4-6.| 6-8.|8-10.|10-12.|0'-2'.|2'-4'.|4'-6'.|6'-8'.|8'-10'|10'-12'|
+--------------------+-----+-----+-----+-----+-----+------+------+------+------+------+------+-------+
| Finland (76) | 2.3 | 2.0 | 2.2 | 3.0 | 4.6 | 12.1 | 18.9 | 19.2 | 16.1 | 10.1 | 6.1 | 3.4 |
| Edinburgh (64) | 1.7 | 2.0 | 1.4 | 1.7 | 4.7 | 14.2 | 22.4 | 23.7 | 11.9 | 9.2 | 5.1 | 2.0 |
| Belgium (77) | 3.0 | 2.9 | 1.7 | 1.8 | 2.0 | 6.4 | 12.9 | 21.6 | 19.4 | 15.8 | 8.4 | 4.1 |
| Brocken (78) | 1.6 | 2.5 | 1.3 | 1.3 | 4.2 | 3.1 | 12.1 | 28.6 | 22.4 | 10.1 | 7.2 | 5.6 |
| Switzerland (72) | 3.1 | 2.3 | 2.1 | 1.6 | 2.0 | 7.3 | 13.8 | 20.9 | 20.8 | 14.6 | 8.0 | 3.5 |
| Italy (77) | 1.3 | 1.6 | 1.4 | 2.0 | 3.0 | 8.5 | 19.5 | 26.5 | 16.6 | 9.8 | 8.3 | 1.5 |
| Hungary (i.) (67) | 2.1 | 1.9 | 1.9 | 2.1 | 2.9 | 11.5 | 18.1 | 22.0 | 17.9 | 10.7 | 6.2 | 2.8 |
| " (ii.) (67) | 6.9 | 4.2 | 2.3 | 2.0 | 2.0 | 5.0 | 9.9 | 16.9 | 18.2 | 10.7 | 11.7 | 10.0 |
| " (iii.) (75)| 2.3 | 1.9 | 2.0 | 2.4 | 2.7 | 7.9 | 16.1 | 22.1 | 19.1 | 12.7 | 7.6 | 3.2 |
| " (iv.) (75) | 2.6 | 2.2 | 1.9 | 1.9 | 3.6 | 13.3 | 19.9 | 20.7 | 15.2 | 9.2 | 6.2 | 3.3 |
| Trevandrum (74) | 5.6 | 4.9 | 4.3 | 1.3 | 1.4 | 2.0 | 13.3 | 24.5 | 15.9 | 13.3 | 7.6 | 5.9 |
| Agustia (74) | 2.9 | 2.9 | 0.3 | 0.0 | 1.7 | 2.9 | 15.1 | 36.1 | 22.2 | 9.3 | 4.6 | 2.0 |
+--------------------+-----+-----+-----+-----+-----+------+------+------+------+------+------+-------+
32. _Daily Variation._--The figures in Table XII. are again
percentages. They are mostly based on data as to the hour of
commencement of thunderstorms. Data as to the hour when storms are
most severe would throw the maximum later in the day. This is
illustrated by the first two sets of figures for Hungary (67). The
first set relate as usual to the hour of commencement, the second to
the hours of occurrence of lightning causing fires. Of the two other
sets of figures for Hungary (75), (iii.) relates to the central plain,
(iv.) to the mountainous regions to north and south of this. The hour
of maximum is earlier for the mountains, thunder being more frequent
there than in the plains between 8 A.M. and 4 P.M., but less frequent
between 2 and 10 P.M. Trevandrum (8 deg. 31' N., 76 deg. 59' E., 195
ft. above sea-level) and Agustia (8 deg. 37' N., 77 deg. 20' E., 6200
ft. above sea-level) afford a contrast between low ground and high
ground in India. In this instance there seems little difference in the
hour of maximum, the distinguishing feature being the great
concentration of thunderstorm occurrence at Agustia between noon and 6
P.M.