Daily Sunspot Evaluation
Observation Sheet Monday, 31 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)
- 12
- Number of spots (f)
- 111
- Relative number (R)
- 231
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19800331.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HAX – 2 | 14 | 37W | 235 | 42W | 2 | |
| 2 | CRI – 13 | 8 | 36W | 232 | 39W | 7 | |
| 3 | DAI – 17 | 14 | 32W | 228 | 35W | 10.5 | |
| 4 | CRI – 7 | 10 | 21W | 217 | 24W | 3 | |
| 5 | CAI – 6 | 24 | 20W | 216 | 23W | 2 | |
| 6 | HAX – 5 | 14 | 16W | 212 | 19W | 2 | |
| 7 | AXX – 1 | 15 | 05W | 201 | 08W | ||
| 8 | FKC – 29 | 26 | 17E | 179 | 14E | 11.5 | |
| 9 | HAI – 6 | -29 | 26W | 222 | 29W | 2 | |
| 10 | DKO – 8 | -14 | 11E | 185 | 08E | 7.5 | |
| 11 | CRI – 16 | -9 | 17E | 179 | 14E | 6 | |
| 12 | HSX – 1 | -11 | 60E | 136 | 57E | 2 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.