Daily Sunspot Evaluation
Observation Sheet Monday, 7 May 1990
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)
- 8
- Number of spots (f)
- 68
- Relative number (R)
- 148
- Observer
- TÖ0
- Reading
- counts consistent, some coordinates doubtful
- File
- 19900507.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | RR – 1 | 14 | 66W | 171 | 1 | 194 | |
| 2 | HS – 1 | 21 | 56W | 161 | 2 | 183 | |
| 3 | BRI – 10 | 15 | 38W | 143 | 6 | 192 | |
| 4 | FAC – 27 | 17 | 27E | 78 | 16 | 188 | |
| 5 | HS – 2 | -13 | 08W | 113 | 2 | 185 | |
| 6 | BRI – 16 | -13 | 14E | 81 ⚠ | 8 | 191 | |
| 7 | CSO – 7 | -12 | 30E | 75 | 8 | 190 | |
| 8 | ? – 4 | -17 | 75E | 30 | 7 | 193 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.