TABLE TV. Mean Temperature of every day 
the month of April, as deduced from the observations talcen on that day at the Gardens of the Royal Horticultural Society at Chiswich in the years 1826-1869 ; 
and extremes of Mean Temperature for every day within the same period. 
1826 
1827*1828 
1829 
1830 
1831 
1832 
1833 
1834 
>835 
1836 
1837 
1838 
1839 
1840 
1841 
1842 
1843 
1844 
845 
1846 
1847 
1848 
1849 
1850 
1851 
1852 
1853 
1854 
•855 
1856 
•857 
1858 
•859 
i860 
861 
1862 
1863 
1864 
1865 
1866 
1867 
868 
1869 
I s 
Lowest 
Hlglu at 
Tear 
J 
430 
45-2 
46-1 
395 
372 
428 
467 
49-1 
463 
54-3 
388 
390 
350 
41, 
44-6 
46-8 
42-8 
53-7 
48-1 
43-3 
53-2 
35-9 
56-1 
47-6 
53-1 
48-1 
42-5 
49-0 
61-9 
384 
51-8 
49-3 
39-3 
37-7 
45-8 
43-2 
52-7 
44-1 
44-7 
45-9 
427 
52-8 
48-2 
40 5 
4°4 
35-0 
1838 
56-1 
1848 
2 
627 
42-1 
347 
367 
428 
483 
50-7 
49-0 
59-7 
401 
41-4 
384 
38-6 
47-1 
43-0 
40-0 
53-5 
521 
46-4 
507 
35-2 
57-9 
46-4 
52-9 
47-6 
40-3 
47-4 
49-8 
35-6 
53-5 
500 
43-3 
48-2 
40-1 
44-0 
52-6 
451 
43-2 
44-7 
43-1 
54-5 
47-9 
44-2 
46-0 
34-7 
1829 
59-7 
1835 
3 
54-1 
512 
395 
400 
34-6 
46-5 
52-9 
51-5 
45-6 
55-9 
39-7 
39-2 
41-9 
33-2 
40-7 
430 
40-4 
53-9 
54-6 
49-4 
460 
381 
59-0 
45-3 
52-8 
48-6 
399 
48-9 
48-9 
44-4 
49-6 
49-6 
52-4 
540 
44-6 
45-7 
50-1 
472 
46-0 
45-9 
43-4 
537 
50-8 
41-1 
467 
33-2 
1839 
590 
1848 
4 
64-3 
51-4 
395 
480 
350 
43-8 
54-7 
51-4 
48-2 
52-5 
385 
39-9 
49-8 
341 
42-7 
465 
41-6 
51-8 
54-7 
51-3 
45-6 
42-7 
59-1 
45-8 
51*3 
45-1 
40-7 
54-9 
45-5 
417 
47-7 
50-6 
476 
56-5 
44-1 
45-8 
49-5 
47-8 
55-6 
44-2 
42-7 
50-7 
48-7 
40-0 
47-1 
34-1 
1839 
59-1 
1848 
s 
533 
538 
413 
50-4 
39-4 
46-8 
576 
50-2 
500 
48-9 
45-0 
38-8 
51-3 
35-7 
47-7 
45-9 
41-2 
47-5 
48-8 
44-7 
46-9 
47-4 
52-7 
46-4 
48-0 
40-5 
45-3 
52-8 
50-8 
43-4 
48-4 
571 
42-8 
56-8 
47-7 
42-8 
51-3 
44-2 
38-2 
51-4 
46-6 
51-6 
53-2 
47-9 
47-6 
35-7 
1839 
57-6 
1832 
6 
553 
587 
46-2 
49-1 
45-7 
48-8 
493 
47-4 
47-2 
50-5 
45-7 
39-0 
54-3 
34-5 
44-7 
44.4 
45-2 
52-0 
49-7 
42-8 
43-9 
48-7 
43-8 
45-4 
50-6 
38-7 
48-0 
53-9 
491 
52-6 
43-9 
53-8 
41-5 
60-5 
45-4 
43-4 
517 
51-1 
44-1 
54-3 
48-1 
63-9 
55-0 
44-6 
48-1 
34-5 
1839 
60-5 
1859 
7 
552 
55-2 
45-1 
44-2 
51-4 
554 
453 
45-6 
49-9 
50-2 
44-2 
39-0 
47-1 
38-7 
44-0 
45-1 
468 
53-9 
47, 
42-9 
43-6 
49-6 
42-8 
44-7 
551 
40-2 
44-8 
50-6 
530 
49-5 
46-8 
52-5 
41-5 
630 
50-1 
43-5 
48-4 
46-6 
45-9 
55-3 
44-1 
50-9 
54-9 
53-7 
48-1 
38-7 
1839 
63-0 
1859 
8 
673 
52-6 
476 
43-7 
580 
482 
46-5 
45-7 
44-2 
561 
46-4 
37-8 
440 
37-0 
41-3 
43-5 
42-6 
49-1 
47-7 
41-1 
45-9 
49-9 
40-7 
46-1 
52-5 
43-2 
43-7 
42-9 
551 
47-1 
46-9 
49-9 
46-3 
54-5 
517 
39-1 
43-3 
48-9 
47-4 
52-9 
48-0 
479 
45-2 
53-9 
47-1 
370 
1839 
580 
1830 
54-7 
54-7 
48-7 
433 
56-4 
54-1 
46-7 
49-2 
41-6 
579 
43-2 
36-0 
42-7 
38-4 
40-8 
44-3 
44-4 
42-2 
521 
40-7 
44-7 
462 
42-3 
46-5 
500 
40-7 
43-1 
42-0 
50-3 
49-3 
46-1 
49-2 
386 
52-5 
42-0 
39-2 
44-7 
53-6 
63-3 
50-6 
42-9 
48-9 
40-7 
45-2 
462 
360 
1837 
57-9 
1835 
10 
51*1 
530 
45-1 
452 
499 
52-8 
45-8 
486 
40-8 
51-1 
47-8 
33-6 
540 
40-7 
43-9 
451 
42-3 
38-2 
50-3 
40-4 
49-2 
45 8 
41-9 
435 
49-5 
42-6 
44-0 
47-3 
44-2 
46-7 
51-5 
51-6 
41-3 
491 
39-5 
40-7 
46-1 
551 
641 
55-6 
47-3 
47-9 
40-2 
54-6 
46-6 
33-6 
1837 
55-6 
1865 
n 
62-6 
49-8 
52-0 
49-8 
511 
52-2 
46-6 
43-2 
41-6 
43-2 
43-7 
35-6 
57-0 
42-7 
47-9 
41*1 
41-6 
36-7 
50-2 
39-6 
49-6 
45-6 
48-2 
41*0 
50-0 
41-9 
46-2 
50-1 
50-4 
48-7 
63-0 
41-1 
44-9 
47-2 
40-0 
45-6 
40-9 
53-0 
51-6 
501 
50-1 
46-9 
41-5 
59-1 
46-7 
35-6 
1837 
59-1 
1869 
12 
49-0 
496 
55-1 
52-6 
51-6 
56-0 
45’6 
43-2 
40-1 
473 
47-6 
37-4 
46-7 
43-6 
46-4 
37-8 
41-2 
38-1 
51-7 
44-0 
559 
54-3 
52-2 
43-4 
51-1 
45-1 
466 
46-2 
51-0 
51-7 
517 
42-9 
42-7 
44-4 
41-3 
51-0 
32.1 
53-1 
49-6 
52-5 
53-5 
47-9 
37-3 
58-4 
47’3 
32-1 
1862 
58-4 
1869 
52-3 
490 
532 
48-9 
48-5 
58-1 
464 
46-7 
40-2 
50-2 
50-0 
36-9 
43-3 
43-8 
46-8 
48-1 
40-8 
36-7 
520 
46-3 
507 
42-8 
50-3 
42-6 
491 
42-5 
48-6 
39-6 
49-8 
483 
52-3 
40-8 
40-7 
39-9 
40-7 
47-1 
35-6 
50-6 
380 
54-8 
531 
50-3 
44-0 
576 
46-5 
35-6 
1862 
58-1 
1831 
14 
555 
50-0 
53-5 
53-0 
54-3 
500 
492 
409 
42-0 
49-8 
50-9 
38-8 
47-3 
48-9 
50-1 
49-6 
44.4 
48-5 
51-6 
460 
52-1 
41-5 
43-4 
437 
50-7 
44-3 
54-5 
43-7 
48-0 
50-5 
50-4 
40-5 
49-0 
44-6 
39-6 
45-7 
39-4 
49-7 
48-3 
52-2 
49-4 
50-2 
437 
63-3 
48-0 
38-8 
1837 
63-3 
1869 
15 
590 
53-1 
51*6 
50-0 
56-5 
53-5 
52-7 
43-2 
46-0 
46-9 
45-5 
42-3 
49-2 
48-1 
50-6 
46-4 
43-8 
53-0 
55-3 
42-6 
520 
41-0 
47-3 
42-6 
50-8 
45-0 
49-6 
46-5 
51-6 
54-5 
473 
39-9 
557 
39-6 
47-2 
45-5 
33-5 
49-5 
56-6 
47-3 
52-1 
51-6 
49;1 
53-9 
48-6 
33-5 
1862 
590 
1826 
16 
522 
49-8 
51-4 
41-6 
573 
55-2 
505 
41-2 
465 
379 
45-9 
36-9 
37-0 
51-4 
53-0 
44-7 
46-6 
53-5 
53-5 
44-8 
53-3 
39-3 
51-8 
43-2 
48-7 
49-2 
43-3 
i 49-4 
52-0 
572 
43-3 
40-7 
60-3 
37-3. 
47-3 
49-4 
46-5 
53-5 
460 
57-3 
50-4 
50-3 
52-5 
49-8 
4^3 
36-9 
1837 
60-3 
1858 
*7 
482 
497 
50-8 
503 
53-5 
49-6 
48-4 
408 
490 
374 
44-4 
42-1 
39-6 
46-4 
47-7 
490 
45-5 
541 
55-3 
49-8 
50-6 
383 
49-9 
36-4 
50-3 
52-9 
44-1 
52-4 
48-0 
53-8 
44-8 
49-1 
47-7 
380 
45-6 
49-3 
48-5 
55-8 
49-7 
56-5 
51-0 
54-8 
53-9 
47-3 
48-2 
36-4 
1849 
56-5 
1865 
18 
50-5 
46-6 
50*5 
51-8 
551 
47-5 
52-3 
41-1 
49-7 
43-7 
46-6 
41-7 
38-5 
51-3 
49-5 
51-7 
44-5 
55-5 
49-3 
45-5 
44-2 
43-3 
478 
40-3 
50-4 
54-7 
44-1 
55-8 
54-2 
47-4 
46-8 
55-9 
48-7 
38-4 
46-0 
48-1 
517 
52-4 
49-7 
65-5 
52-3 
56*8 
49-4 
461 
48-7 
38-4 
1859 
56-8 
1867 
19 
558 
486 
51*6 
460 
46-6 
498 
46-5 
462 
52-2 
48-9 
50-7 
44-6 
36-7 
50-3 
475 
45-9 
45-0 
51-3 
53-8 
47-1 
44-7 
44-3 
50-3 
35-3 
53-3 
50-4 
39-6 
50-2 
60-9 
49-5 
41-5 
55-4 
49-2 
39-4 
38-3 
43-8 
54-3 
50-0 
56-8 
64-6 
53-8 
58-3 
51-4 
49-3 
48-6 
35-3 
1849 
60-9 
1854 
20 
51*2 
47-5 
489 
45-4 
51-4 
49-6 
470 
451 
50-2 
52-2 
50-2 
43-9 
38-3 
43-7 
54-3 
46-7 
49-9 
58-5 
575 
52-4 
430 
46-3 
51-8 
36-6 
48-6 
55-4 
45-1 
46-1 
63-3 
48-4 
44-6 
52-8 
52-0 
42-8 
41-3 
42-8 
557 
53-3 
56-9 
51-4 
48-0 
51-4 
51-9 
49-8 
49-2 
36-6 
1849 
633 
1854 
21 
552 
462 
44-9 
51-0 
53-6 
50-4 
500 
45*2 
45-6 
52-5 
51-3 
40-6 
39-8 
49-2 
53-8 
46-0 
50-8 
54-8 
575 
52-1 
43-5 
49-9 
49-5 
38-4 
490 
54-5 
49-4 
46-7 
59-6 
42-0 
45-6 
517 
56-7 
430 
38-4 
40-4 
48-9 
51-3 
58-1 
58-7 
537 
46-4 
54-6 
54-6 
49'4 
384 
{l8«0 
59-6 
1854 
22 
59-8 
41-7 
46-9 
44.4 
551 
55-7 
53-4 
51-3 
47-4 
52-5 
52-2 
45-3 
40-7 
53-4 
59-7 
47-3 
51-3 
49-5 
56-9 
477 
47-9 
44-8 
48-4 
43-6 
48-0 
60-6 
55 - 8 
44-8 
47-0 
41-6 
45-7 
46-3 
591 
42-7 
38-3 
47-1 
52-9 
53-3 
52-5 
60-4 
47-9 
520 
54-9 
510 
497 
38-3 
1860 
60-4 
1865 
23 
49-9 
390 
48-2 
50-4 
53-4 
54-0 
56-4 
53-6 
48-2 
51-3 
49-5 
44-8 
46-6 
47-7 
56-5 
43-0 
56-7 
48-8 
55-2 
53-8 
47-4 
45-7 
51-1 
44-4 
44-4 
52-2 
55-5 
43-6 
41-1 
43-0 
48-2 
39-9 
58-1 
46-5 
42-7 
45-0 
52-3 
49-5 
51-4 
56-2 
47-3 
555 
53-8 
54-8 
49‘5 
39-0 
1827 
58-1 
1858 
24 
456 
39-9 
52-6 
465 
52-2 
54-2 
46-2 
50-2 
44-7 
52-9 
44-4 
46-4 
44-9 
42-5 
59-9 
50-4 
610 
46-7 
52-8 
555 
46-5 
460 
44-7 
48-3 
45-9 
61-6 
44-2 
42-3 
40-5 
53-9 
46-8 
41-8 
55-2 
48-2 
379 
50-3 
56-9 
49-1 
49-2 
54-6 
50-4 
54-2 
52-4 
55-4 
49-0 
379 
1860 
610 
1842 
*5 
43-6 
409 
520 
39-4 
51-2 
560 
475 
42-6 
47-6 
47-8 
50-5 
50-4 
45-6 
46-5 
61-5 
54-5 
58-3 
44-7 
55-3 
582 
50-7 
47-9 
41-6 
52-4 
48-5 
48-6 
45-2 
37-4 
45-1 
41-6 
57-2 
41-3 
51-4 
51-5 
45-6 
50-0 
59-9 
54-9 
49-0 
52-1 
55-9 
48-8 
49-5 
57-6 
49’5 
37-4 
1853 
61-5 
1840 
26 
471 
421 
513 
45*1 
556 
55-6 
43-6 
58-7 
47-2 
41-7 
46-8 
52-2 
43-9 
46-7 
60-7 
590 
53-4 
44-3 
59-1 
54-4 
41-5 
50-1 
43-1 
47-8 
50-9 
48-8 
50-2 
420 
47-6 
45-2 
53-7 
40-2 
48-7 
54-3 
43-4 
49-8 
55-9 
52-9 
50-6 
601 
60-5 
49-8 
51-2 
54-4 
499 
40-2 
1857 
60-7 
1840 
27 
42-2 
57-9 
39-7 
42-1 
45-3 
41-1 
50-7 
60-4 
63-8 
52-6 
46-9 
51-3 
52-6 
44-6 
52-1 
45-3 
50-5 
45-1 
41-8 
43-6 
44-4 
46-9 
44-6 
40-4 
40-8 
48-0 
46-9 
42-4 
32-4 
54-0 
56-5 
50-5 
64-0 
64-1 
51-2 
51-0 
59-4 
492 
32-4 
1861 
64-1 
1866 
28 
390 
55'0 
603 
44-8 
609 
506 
452 
50-4 
58-4 
46-2 
44-8 
49-3 
42-8 
51-8 
61-1 
61-6 
58-3 
480 
50-5 
55-5 
45-0 
50-9 
431 
48-0 
45-3 
43-2 
53-4 
48-2 
45-9 
47-1 
43-8 
40-0 
52-2 
49-6 
44-9 
41-2 
55-0 
50-7 
45-6 
58-4 
58-5 
50-8 
50-2 
57-1 
5°’i 
390 
1826 
61-6 
1841 
29 
40-5 
596 
660 
39-4 
62-0 
55-8 
500 
44-5 
57-1 
43-7 
39-2 
50-5 
42-7 
531 
60-6 
57-2 
56-6 
50-9 
50-4 
575 
47-4 
48-2 
43-6 
54-6 
47-3 
44-0 
55-4 
45-2 
44-1 
45-5 
44-5 
450 
511 
55-4 
50-3 
40-6 
57-5 
44-6 
52-6 
44-5 
42-9 
517 
55-2 
479 
49*9 
39-2 
1836 
66-0 
1828 
30 
441 
66-0 
592 
431 
621 
575 
530 
48-3 
53-4 
47-3 
41-4 
531 
48-2 
572 
59-4 
55-9 
58-5 
58-7 
52-3 
560 
52-6 
46-1 
48-3 
557 
48-3 
44-2 
560 
48-4 
48-4 
458 
43-6 
43-8 
47-5 
44-2 
61-5 
49-9 
68-6 
42-4 
49-9 
41-4 
41-4 
52-4 
572 
50-8 
51-0 
41-4 
ill 
66-0 
1827 
1 Means 
50-7 
501 
49-8 
46-0 
51*1 
61-6 
4,0 
47-2 
47-6 
«, 
45-6 
44, 
44-7 
50-8 
48-2 
,7, 
49-2 
52-6 
47-8 
45, 
48, 
44-9 
49-7 
46-5 
40, 
47-1 
47-0 
47-7 
46-8 
48-5 
47-6 
43-8 
44-8 
- 
50-3 
49-5 
52-8 
49-5 
51-5 
49-7 
51-4 
482 
Mean Daily Tkmpk&aturb im 
day in the year 1827. 
The difference between these numbers is 33°'9, and it represents the extreme difference between the Mean Temperature of two days in the month of April 
5 the 27th; in the year 1861 i 
3 Mean Temperatur^H 
32°-4; and in the year 1866 it was 64°1 ; the difference between these numbers is 31°7. 
The day of the month whose Mean Temperature has been subjected to the least difference was the 18th; in the year 1869 its Mean Temperature was 
and in the year 1867 it was 56 0, 8; the difference between these numbers is 18 0- 4. 
