Daily Sunspot Evaluation
Observation Sheet Friday, 22 June 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)
- 7
- Number of spots (f)
- 31
- Relative number (R)
- 101
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19900622.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 6 | 8 | 64W | 281 | 67W | 6.5 | 252 |
| 2 | HH – 1 | 27 | 71E | 146 | 68E | 3 | 262 |
| 3 | BXO – 2 | 15 | 71E | 146 | 68E | 6 | 263 |
| 4 | CSO – 3 | -31 | 63W | 280 | 66W | 15 | 250E |
| 5 | CSI – 8 | -8 | 41W | 258 | 44W | 4 | 253 |
| 6 | BRI – 10 | -9 | 40E | 177 | 37E | 5 | 264 |
| 7 | ? – 1 | -18 | 79E | 138 | 76E | - | 265 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.