MISC ELLANEOUS METEOROLOGICAL PHENOMENA 57 
tude 78° 31’ west; in the afternoon and from 19h to mid- 
night. (2) October 27, 1928, latitude 5° 44’ north, longi- 
tude 79° 54’ west; in the morning. (3) October 28, 1928, 
latitude 4° 15’ north, longitude 79° 39’ west; in the morn- 
ing. (4) March 26, 1929, latitude 16° 08’ south, longitude 
158° 22’ west; in the morning. Lightning was observed 
on sixteen days during the cruise, or on only 5 per cent 
of the total days (311). These data are presented in 
table 72. 
Table 69. Frequency of days on which rain occurred 
for groups, Carnegie, 1928-29 4 
No. with | No. with- | Total 
1928 
I July 29-Aug. 6 i 8 9 
sal Aug. 7-10 1 3 4 
Il Aug. 11-23 0 13 13 
IV Aug. 24-Sep. 16 5 19 24 
v Oct. 2-10 3 6 
VI Oct. 26-Nov. 6 9 3 12 
Vil 
a Nov. 7-Dec. 21 11 29 40 
b Feb. 22-28, 1929 1 6 7 
Vil Dec. 22-31 1 9 10 
1929 
1D.¢ Jan. 1-14 3 Be 14 
x Feb. 6-17 3 9 12 
xI Mar. 1-31 14 11 25 
XII Apr. 22-May 31 17 18 35 
XIII 
8} June 1-30 5 9 14 
July 1-3 0 3 3 
XIV July 4-21 9 10 19 
xv July 22-28 5 3 8 
XVI Sep. 4-8 1 4 5 
XVII 
a Sep. 9-16 1 7 Pets 
Sep. 17-Oct. 7 6 6 12 
c Oct. 11-25 9 7 16 
XVUI Oct. 26-Nov. 14 6 18 24 
Total 111 212 323 
2 From abstract of log. 
Table 70. Number of days on which rain occurred for 
ranges in latitude, Carnegie, 1928-29 4 
nue 
: : Percentage 
Ranges in Total | No. with- | No. with 
65 N-55 N 19 15 4 21.1 
55 N-45 N 41 27 14 34.1 
45 N-35 N 43 30 13 30.2 
35 N-25 N 43 30 13 30.2 
25 N-15 N 36 23 13 36.1 
15N- 5N 50 30 20 40.0 
5N- 58S 34 25 9 26.5 
5S-15S 54 46 8 14.8 
58-258 35 20 15 42.9 
5S8-35S 26 18 8 30.8 
35 S-45S 9 7 2 22.2 
Total 390 271 1D eee 
Means: All latitudes 29.9 
All days 30.5 

4 From abstract of log. 
CLOUDS 
Data on the number of tenths of sky covered by clouds 
have been taken from the observations at Greenwich mean 
noon. Here, again, owing to the variation in local time 
at which these observations were made, it is not possible 
to make detailed comparisons. 
These cloud data are presented in tables 73 and 74. 
From table 74 it can be seen that cloudiness is at amax- 
imum at the equator and within the range of latitude 45° 
to 55° north. 
FOG 
Data concerning the number of days with fog, andthe 
duration in each instance, are given in table 75. Fog 
Table 71. Diurnal variation of rainfall for groups by 
quarter-day periods, Carnegie, 1928-2 
Group|No. quarter -day periods (local mean hours) Tota 
00-06 | 06-12 | 12-18 | 18-24 | 00-24 | ‘ays 


ihe val 1 1 1 4 1 
10 1 1 0 2 1 
1 0 0 0 0 0 0 
Iv 0 3 0 5 8 5 
vV oO 1 3 0 4 4 
ViGe6 8 8 7 29 9 
vu 
{a 6 3 2 7 18 11 
1 0 0 0 1 1 
vil +O 0 1 1 2 1 
Tk. 0 0 1 3 4 3 
xX: 1 1 1 0 3 3 
XI O65 2 4 7 18 14 
xX 66 5 7 10 28 17 
xi 
a) 3 1 1 3 8 5 
fs 0 0 0 0 0 0 
SV 7 6 6 8 27 9 
XV 4 2 1 3 10 5 
XVI 1 0 1 0 2 1 
XVII 
a) 0 1 0 0 1 1 
b) 2 0 3 2 7 6 
c) 6 3 5 7 21 9 
XVII 3 3 4 1 11 6 
Total 52 41 50 65 208 112 
Table 72. Frequency of ade on which lightnin tning 
was observed, by groups, Carnegie, 1928-29 
No. days 
Group? Dates neat Lighting 
y observed 
1928 
mi Aug. 11-23 13 1 
IV Aug. 24-Sep. 15 22 1 
Vv Oct. 2-10 9 8 
VI Oct. 26-Nov. 6 12 2 
xI Mar. 1-31 25 3 
XII Apr. 22-May 31 32 1 
Total 311 16. 
2 prrom abstract of log. 
PNo days with lightning were recorded in the 
groups which are not listed above. 
