| Hour | Act. | Temp. Act. | Act. reduced | Barom. | Air | D.P. | Diff. | Sat. | Black Bulb | |
| 6.12 to 6.22 a.m. 6.24 to 6.37 a.m. 7.13 to 7.23 a.m. 7.24 to 7.34 a.m. 8.34 to 8.44 a.m. 8.47 to 9.00 a.m. 9.53 to 10.03 a.m. 10.04 to 10.17 a.m. 11.24 to 11.31 a.m. | 2·9 6·1 12·4 14·7 19·9 21·7 23·5 25·3 33·3 | 60·6 66·0 70·8 76·0 82·8 88·8 86·6 89·5 111·5 | 3·5988 5·4472 10·2672 11·4025 14·2653 14·7343 16·2620 17·0775 20·7014 | 25·783 25·832 25·819 | 51·5 52·7 56·5 57·8 59·8 60·5 67·2 67·0 64·6 | 49·4 50·3 52·3 53·1 50·8 51·6 61·6 58·8 59·0 | 2·1 2·4 4·2 4·7 9·0 8·9 5·6 8·2 5·6 | ·930 ·925 ·900 ·855 ·742 ·730 ·832 ·778 ·832 | 98·0 104·0 117·0 121·0 127·0 133·0 130·0 | Thick cumulus low on plains. Sunrise yellow red. Cloudless. Clouds rise. |
| Hour | Act. | Temp. Act. | Act. reduced | Barom. | Air | D.P. | Diff. | Sat. | |
| 9.53 to 10.06 a.m. 10.50 to 11.03 a.m. 11.31 to 11.44 a.m. 12.33 to 12.46 p.m. 1.07 to 1.21 p.m. 2.47 to 3.00 p.m. 3.48 to 4.00 p.m. 4.03 to 4.16 p.m. | 25·8 26·1 28·5 30·9 29·1 21·1 16·7 16·2 | 78·0 80·5 84·0 91·5 90·5 75·0 73·0 75·0 | 17·5306 19·1835 20·2065 20·4267 20·4388 16·5635 13·4435 12·7170 | 25·854 25·844 25·808 25·803 | 63·0 64·0 65·3 65·8 67·0 67·2 62·0 61·5 | 55·3 52·8 51·9 51·2 49·6 56·6 50·8 50·5 | 8·7 11·2 13·4 14·6 17·4 10·6 11·2 11·0 | ·772 ·690 ·638 ·620 ·560 ·708 ·690 ·692 | Sky cloudless. Wind N.E. |
Silchar (Cachar). Elev. 116 feet, Lat. 24° 30′ N., Long. 93° E. (approximate)
NOVEMBER 26TH, 1850. Watch slow 13′ 39″ mean time.
| Hour | Act. | Temp. Act. | Act. reduced | Barom. | Air | D.P. | Diff. | Sat. | |
| 9.11 to 9.24 a.m. 9.34 to 9.41 a.m. 9.50 to 9.57 a.m. 10.07 to 10.14 a.m. 11.03 to 11.16 a.m. Noon to 12.03 p.m. 12.58 to 1.11 p.m. 2.51 to 3.04 p.m. 3.55 to 4.08 p.m. 4.09 to 4.22 p.m. 4.23 to 4.36 p.m. | 19·4 22·7 25·3 26·5 26·3 26·4 27·6 23·0 17·6 15·5 12·0 | 69·0 81·0 87·5 91·5 89·0 90·0 94·0 93·0 91·5 93·5 93·7 | 16·4706 16·5937 17·3558 17·5695 17·5251 17·8144 17·9676 15·0880 11·6688 11·0215 7·8360 | 29·999 29·967 29·892 29·881 | 66·3 68·7 70·3 73·2 74·5 76·8 78·5 79·5 79·4 78·5 | 63·5 61·5 62·7 60·3 61·7 60·3 62·1 57·0 62·1 62·1 | 2·8 7·2 7·6 12·9 12·8 16·5 16·4 22·5 17·3 16·4 | ·860 ·788 ·780 ·657 ·658 ·586 ·588 ·480 ·570 ·588 | Dense fog till 7.30 a.m. Wind north. Clear. Wind N.E. Light cirrhus low. Streaks of cirrhus aloft. Sun sets in hazy cirrhus. |
Chittagong, Elev. 200 feet, Lat. 22° 20′ N., Long. 91° 55′ E.
A.—DECEMBER 31ST, 1850. Watch slow 3′ 45″ mean time.
| Hour | Act. | Temp. Act. | Act. reduced | Barom. | Air | D.P. | Diff. | Sat. | Black Bulb | |
| 7.39 to 7.52 a.m. 8.40 to 8.53 a.m. 9.04 to 9.08 a.m. 9.52 to 9.56 a.m. 10.02 to 10.06 a.m. 11.16 to 11.29 a.m. 11.52 to 11.56 a.m. 1.38 to 1.41 p.m. 1.47 to 1.51 p.m. 3.10 to 3.17 p.m. 3.18 to 3.25 p.m. | 10·0 21·3 23·2 24·3 25·1 24·3 26·6 24·7 25·4 21·1 19·3 | 70·0 91·5 89·5 87·3 90·5 84·5 92·6 84·0 90·7 86·0 89·3 | 8·3700 14·1219 15·6136 16·7341 16·7668 17·1558 17·5028 17·5123 16·8418 14·6645 13·0468 | 29·874 29·923 29·892 29·831 | 57·0 59·5 63·3 64·5 65·7 68·5 69·5 71·7 71·0 | 55·7 57·2 59·7 61·3 60·4 58·6 59·2 61·8 60·5 | 1·3 2·3 3·6 3·2 5·3 9·9 10·3 9·9 10·5 | ·960 ·920 ·890 ·900 ·840 ·722 ·710 ·720 ·710 | 127·0 142·0 148·0 150·0 | Cloudless. Mountains clear. Wind N.N.E. Cool. Wind N.W. Wind S.W. Clouds about in patches. |
B.—JANUARY 1, 1851. Watch slow 3′ 45″ mean time.
| Hour | Act. | Temp. Act. | Act. reduced | Barom. | Air | D.P. | Diff. | Sat. | Black Bulb | |
| 7.34 to 7.41 a.m. 8.38 to 8.45 a.m. 9.44 to 9.51 a.m. 10.46 to 10.53 a.m. 11.50 to 11.57 a.m. 12.06 to 12.13 p.m. 12.58 to 1.02 p.m. 1.45 to 1.52 p.m. 3.15 to 3.22 p.m. 4.27 to 4.34 p.m. 4.36 to 4.43 p.m. 4.45 to 4.52 p.m. 4.56 to 5.09 p.m. 5.12 to 5.18 p.m. | 10·0 16·0 19·5 21·0 21·5 24·1 23·9 21·4 18·1 10·2 9·8 8·5 5·6 3·8 | 69·4 70·0 74·7 78·2 81·2 88·0 87·2 84·5 82·5 82·0 84·0 85·0 85·0 84·0 | 8·4200 13·3920 15·3660 15·8550 15·6950 16·4603 16·4432 15·0870 13·0320 7·3746 6·9482 5·9670 3·9312 2·6942 | 29·948 29·891 29·850 29·798 29·778 | 55·4 58·9 63·2 66·7 69·8 70·3 71·0 71·3 71·3 70·0 67·5 68·7 | 54·0 57·7 61·7 62·4 58·3 56·0 56·7 57·5 57·1 59·5 62·7 62·2 | 1·4 1·2 1·5 4·3 11·5 14·3 14·3 13·8 14·2 10·5 4·8 6·5 | ·953 ·970 ·960 ·870 ·688 ·625 ·625 ·633 ·625 ·708 ·855 ·810 | 104·5 115·0 120·0 117·0 122·5 117·0 | Mist rises and drifts westward till 7.30 a.m. Wind N.W., clouds rise. Sunset cloudless. |
C.—JANUARY 2, 1851. Watch slow 3′ mean time.