Daily Sunspot Evaluation
Observation Sheet Sunday, 22 July 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)
- 10
- Number of spots (f)
- 79
- Relative number (R)
- 179
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19900722.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AR – 1 | 11 | 36W | 213 | 36W | 0.5 | 305 |
| 2 | BXO – 5 | 10 | 01W | 178 | 01W | 3.5 | 313 |
| 3 | BXO – 6 | 22 | 08E | 169 | 08E | 3.5 | 314 |
| 4 | FKI – 38 | 10 | 35E | 142 | 35E | 20 | 311 |
| 5 | BXO – 6 | 27 | 44E | 133 | 44E | 3 | 317 |
| 6 | BXI – 3 | -15 | 29W | 206 | 29W | 5 | 315 |
| 7 | FKO – 15 | -28 | 10E | 167 | 10E | 15.5 | 310 |
| 8 | BXO – 3 | -15 | 11E | 166 | 11E | 4 | 318 |
| 9 | HS – 1 | -22 | 56E | 121 | 56E | 2 | 316 |
| 10 | HK – 1 | -13 | 75E | 102 | 75E | 3 | 319 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.