Daily Sunspot Evaluation
Observation Sheet Wednesday, 15 March 1989
There is no typed record for this day. The values below were read by computer from the table on the sheet; when in doubt, see the drawing. Details →
- Number of groups (g)
- 9
- Number of spots (f)
- 127
- Relative number (R)
- 217
- Observer
- MB
- Reading
- all checks consistent
- File
- 19890315.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | FKC – 70 | 34 | 30W | 252 | 32W | 23.0 | |
| 2 | AX – 3 | 33 | 14W | 236 | 16W | 2.5 | |
| 3 | BRI – 5 | 17 | 15E | 207 | 13E | 4.5 | |
| 4 | DSI – 7 | 32 | 47E | 175 | 45E | 4.0 | |
| 5 | BXO – 2 | -34 | 33W | 255 | 35W | 3.5 | |
| 6 | AX – 1 | -41 | 21W | 243 | 23W | - | |
| 7 | CAZ – 26 | -17 | 18W | 240 | 20W | 12.0 | |
| 8 | AR – 1 | -18 | 03E | 219 | 01E | 0.5 | |
| 9 | DKO – 12 | -15 | 49E | 173 | 47E | 5.0 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.