DECEMBER
No. of
Observations 28 29 28 24 23 23 23 23 23
Hour 8 a.m. 9 10 11 Noon 1 p.m. 2 3 4
Barom.
corrected 23.000 .013 +.018 .009 22.995 .980 .962 .947 -.944
Temp. Air 59.2 60.1 60.8 61.6 62.4 62.7 62.8 62.3 61.8
D.P. 58.1 58.5 59.5 60.0 60.5 60.5 60.4 60.0 59.9
Diff. 1.1 1.6 1.3 1.6 1.9 2.2 2.4 2.3 1.9
Tens. of
Vapour .492 .497 .514 .523 .533 .532 .531 .522 .521
Weight of
Vapour 5.50 5.57 5.77 5.83 5.93 5.92 5.90 5.83 5.82
Humidity .968 .945 .958 .950 .942 .942 .925 .924 .940
Press. of
Dry Air 22.508 .516 .504 .506 .462 .448 .431 .425 -.423
No. of
Observations 19 19 20 21 22 24 24 23
Hour 5 p.m. 6 7 8 9 10 11 M.n.
Barom.
corrected 22.944 .948 .958 .975 .986 +.991 .989 .994
Temp. Air 60.3 59.4 58.7 58.2 57.8 57.4 57.0 56.7
D.P. 58.6 58.4 57.4 57.0 56.6 56.4 55.9 55.4
Diff. 1.7 1.0 1.3 1.2 1.2 1.0 1.1 1.3
Tens. of
Vapour .498 .496 .479 .473 .467 .463 .456 .449
Weight of
Vapour 5.58 5.58 5.60 5.33 5.25 5.23 5.15 5.07
Humidity .940 .968 .960 .962 .960 .968 .962 .927
Press. of
Dry Air .446 .452 .479 .502 .519 .528 .533 +.545
OCTOBER (22 days)
No. of
Observations 11 19 20 20 19 13 15 13 13 14
Hour 6-6.30 a.m. 7 8 9 10 11 Noon 1 p.m. 2 3
Barom.
corrected 23.066 .072 .086 .099 +.100 .079 .072 .055 .033 .027
Temp. Air 54.4 54.3 55.2 56.3 57.1 57.6 57.9 58.0 57.7 57.9
D.P. 52.7 52.3 53.7 54.4 55.5 55.6 56.1 56.4 56.6 56.2
Diff. 1.7 2.0 1.5 1.9 1.6 2.0 1.8 1.6 1.1 1.7
Tens. of
Vapour .4.9 .403 .423 .434 .450 .451 .459 .463 .466 .460
Weight of
Vapour 4.65 4.58 4.78 4.90 5.07 5.08 5.15 5.17 5.25 5.16
Humidity .943 .925 .950 .935 .942 .935 .940 .950 .962 .940
Press. of
Dry Air +22.657 +.669 .663 .665 .650 .628 .613 .592 .567 .567
No. of
Observations 16 13 6 7 3 7 14 18 14
Hour 4 p.m. 5 6 7 8 9 10 11 M.n.
Barom.
corrected 23.024 -.022 .033 .045 .038 .061 +.072 .067 .068
Temp. Air 57.9 56.6 55.9 55.4 53.7 55.1 54.6 54.5 54.1
D.P. 56.1 54.8 54.4 53.8 53.3 54.1 53.0 53.0 52.8
Diff. 1.8 1.8 1.5 1.6 0.4 1.0 1.6 1.5 1.3
Tens. of
Vapour .458 .439 .433 .424 .417 .429 .413 .413 .411
Weight of
Vapour 5.15 4.98 4.90 4.80 4.75 4.83 4.82 4.82 4.65
Humidity .940 .948 .950 .950 .990 .965 .949 .950 .962
Press. of
Dry Air -.566 .583 .600 .621 .621 .632 .659 .654 .657