Daily Sunspot Evaluation
Observation Sheet Tuesday, 7 May 1991
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)
- 10
- Number of spots (f)
- 44
- Relative number (R)
- 144
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19910507.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 1 | 7 | 73W | 41 | 76W | 2 | 194 |
| 2 | DKC – 6 | 30 | 58E | 270 | 55E | 9 | 208 |
| 3 | EKO – 6 | 8 | 68E | 260 | 65E | 12 | 203 |
| 4 | AX – 1 | 13 | 70E | 258 | 67E | - | 211 |
| 5 | AX – 2 | 3 | 80E | 248 | 77E | 1 | 212 |
| 6 | HA – 1 | -23 | 56W | 24 | 59W | 2 | 199 |
| 7 | DKC – 22 | -9 | 23W | 351 | 26W | 9 | 264 |
| 8 | HA – 3 | -12 | 15W | 343 | 18W | 2.5 | 203 |
| 9 | HS – 1 | -27 | 70E | 258 | 67E | 2 | 210 |
| 10 | AX – 1 | -17 | 72E | 256 | 69E | - | 213 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.