Daily Sunspot Evaluation
Observation Sheet Sunday, 26 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)
- 65
- Relative number (R)
- 165
- Observer
- YK
- Reading
- all checks consistent
- File
- 19910526.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 1 | 16 | 75W | 149 | 75W | 2° | 234 |
| 2 | CAI – 12 | 18 | 24W | 100 | 26W | 8.5 | 243 |
| 3 | BXO – 4 | 20 | 16W | 92 | 18W | 3° | 250 |
| 4 | BXO – 4 | 14 | 13W | 89 | 15W | 3.5 | 244 |
| 5 | EKI – 31 | 20 | 25E | 51 | 23E | 11.5 | 245 |
| 6 | HA – 1 | -13 | 68W | 144 | 70W | 2° | 232 |
| 7 | AX – 6 | -15 | 61W | 137 | 63W | 3.5 | 246 |
| 8 | BRO – 3 | -26 | 12E | 64 | 10E | 5° | 251 |
| 9 | CAO – 2 | -14 | 58E | 18 | 56E | 6.5 | 249 |
| 10 | HK – 1 | -10 | 80E | 356 | 78E | - | 252 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.