Daily Sunspot Evaluation
Observation Sheet Thursday, 20 March 1980
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)
- 7
- Number of spots (f)
- 57
- Relative number (R)
- 127
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19800320.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXX – 6 | 14 | 44E | 297 | 41E | 7.5 | |
| 2 | HAX – 5 | 25 | 49E | 292 | 46E | 3 | |
| 3 | ? – 2 | 9 | 66E | 275 | 63E | 3 | |
| 4 | CAI – 5 | -17 | 57W | 40 | 62W | 5 | |
| 5 | FKC – 32 | -27 | 07W | 348 | 10W | 16 | |
| 6 | BXX – 6 | -26 | 41E | 300 | 38E | 6 | |
| 7 | AXX – 1 | -29 | 64E | 277 | 61E |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.