Monthly Sunspot Classification and Coordinates
April 2018 Monthly report →
Each group: class – number of spots (B, ΔL). NS: No sunspot.
| Drawing | Day | R | Classification and Coordinates |
|---|---|---|---|
| Drawing | 01 | 11 | AX_ – 1 (-9, 43.1E) |
| Drawing | 02 | 0 | NS |
| Drawing | 03 | 0 | NS |
| Drawing | 04 | 0 | NS |
| Drawing | 05 | 0 | NS |
| Drawing | 06 | 0 | NS |
| Drawing | 07 | 0 | NS |
| Drawing | 08 | 0 | NS |
| Drawing | 09 | 0 | NS |
| Drawing | 10 | 11 | AX_ – 1 (-31, 01.4W) |
| Drawing | 11 | 0 | NS |
| Drawing | 12 | 0 | NS |
| Drawing | 13 | 16 | BXI – 6 (11, 46.6E) |
| Drawing | 14 | 0 | NS |
| Drawing | 15 | 0 | NS |
| Drawing | 16 | 12 | AX_ – 2 (17, 03.3W) |
| Drawing | 17 | 11 | AX_ – 1 (6, 33.8W) |
| Drawing | 18 | 22 | AX_ – 1 (2, 12.6W), AX_ – 1 (-14, 07.3E) |
| Drawing | 19 | 13 | BXI – 3 (3, 79.3E) |
| Drawing | 20 | 17 | DRI – 7 (3, 67.5E) |
| Drawing | 21 | 50 | DAI – 10 (3, 54.1E), AX_ – 20 (-9, 38.8E) |
| Drawing | 22 | 26 | DAI – 16 (3, 39.6E) |
| Drawing | 23 | 26 | CAI – 16 (3, 26E) |
| Drawing | 24 | 38 | DAI – 28 (2, 12.9E) |
| Drawing | 25 | 16 | AX_ – 6 (3, 04.3W) |
| Drawing | 26 | 14 | AX_ – 4 (3, 17.5W) |
| Drawing | 27 | 13 | AX_ – 3 (3, 30.6W) |
| Drawing | 28 | 0 | NS |
| Drawing | 29 | 0 | NS |
| Drawing | 30 | 0 | NS |
