+-------------+-----------+-----------+-----------+-----------------------+
| | | |Feb., Mar.,|Sep. to Mar. (N. Lat.).|
| Hour. | Dec. |Nov. & Jan.|Sep. & Oct.|Mar. to Sep. (S. Lat.).|
| +-----+-----+-----+-----+-----+-----+-------+-------+-------+
| | A | B | A | B | A | B | A | B | C |
+-------------+-----+-----+-----+-----+-----+-----+-------+-------+-------+
| 1 | 14 | 7 | 14 | 8 | 27 | 23 | 55 | 38 | 24 |
| 2 | 10 | 6 | 15 | 6 | 20 | 25 | 45 | 37 | 23 |
| 3 | 9 | 4 | 15 | 5 | 15 | 21 | 39 | 30 | 10 |
| 4 | 10 | 5 | 21 | 7 | 14 | 18 | 45 | 30 | 4 |
| 5 | 13 | 5 | 20 | 3 | 10 | 10 | 43 | 18 | 2 |
| 6 | 11 | 3 | 15 | 4 | 2 | 3 | 28 | 10 | 1 |
| 7 | 9 | 2 | 13 | 3 | 1 | 2 | 23 | 7 | 0 |
| 8 | 5 | 1 | 6 | 1 | 0 | 0 | 11 | 2 | 0 |
| 9 | 7 | 2 | 9 | 0 | 0 | 0 | 16 | 2 | 0 |
| 10 | 10 | 0 | 5 | 0 | 0 | 0 | 15 | 0 | 0 |
| 11 | 9 | 0 | 6 | 0 | 0 | 0 | 15 | 0 | 0 |
| Noon | 10 | 0 | 4 | 0 | 0 | 0 | 14 | 0 | 0 |
| 1 | 10 | 0 | 6 | 0 | 0 | 0 | 16 | 0 | 0 |
| 2 | 14 | 0 | 10 | 0 | 0 | 0 | 24 | 0 | 0 |
| 3 | 18 | 1 | 20 | 3 | 0 | 0 | 38 | 4 | 0 |
| 4 | 16 | 7 | 19 | 7 | 1 | 1 | 36 | 15 | 0 |
| 5 | 12 | 11 | 22 | 10 | 5 | 2 | 39 | 23 | 3 |
| 6 | 14 | 10 | 21 | 16 | 8 | 5 | 43 | 31 | 3 |
| 7 | 16 | 13 | 23 | 16 | 20 | 9 | 59 | 38 | 14 |
| 8 | 15 | 12 | 22 | 18 | 24 | 24 | 61 | 54 | 25 |
| 9 | 14 | 15 | 18 | 17 | 27 | 28 | 59 | 60 | 31 |
| 10 | 12 | 15 | 19 | 15 | 31 | 25 | 62 | 55 | 29 |
| 11 | 10 | 12 | 18 | 17 | 33 | 26 | 61 | 55 | 26 |
| Midnight | 9 | 9 | 13 | 11 | 28 | 22 | 50 | 42 | 26 |
+-------------+-----+-----+-----+-----+-----+-----+-------+-------+-------+
| Totals | 277 | 140 | 354 | 167 | 266 | 244 | 897 | 551 | 221 |
+-------------+-----+-----+-----+-----+-----+-----+-------+-------+-------+
|Percentages--| | | | | | | | | |
| Forenoon | 42 | 28 | 42 | 25 | 39 | 46 | 41 | 35 | 35 |
| Afternoon | 58 | 72 | 58 | 75 | 61 | 54 | 59 | 65 | 65 |
+-------------+-----+-----+-----+-----+-----+-----+-------+-------+-------+
8. The preceding remarks relate to auroras as a whole; the different
forms differ considerably in their diurnal variation. Arcs, bands and,
generally speaking, the more regular and persistent forms, show their
greatest frequencies earlier in the night than rays or patches. Table
IV. shows the percentages of e. (evening) and m. (morning) occurrences
of the principal forms as recorded by the Arctic observers at Cape
Thorsden, Jan Mayen and Tasiusak.