Daily Sunspot Evaluation
Observation Sheet Friday, 25 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)
- 11
- Number of spots (f)
- 122
- Relative number (R)
- 232
- Observer
- HÇ0
- Reading
- all checks consistent
- File
- 19900525.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | 33 | 80W | 308 | 83W | 4 | 202 |
| 2 | CAI – 29 | 8 | 42W | 270 | 45W | 8 | 207 |
| 3 | BXO – 5 | 19 | 41W | 269 | 44W | 5 | 217 |
| 4 | AX – 3 | 26 | 06E | 222 | 03E | - | 213 |
| 5 | AX – 3 | 12 | 48E | 180 | 45E | L | 229 |
| 6 | AX – 3 | 22 | 60E | 168 | 57E | - | 218 |
| 7 | ? – 2 | 20 | 77E | 151 | 74E | 3 | 221 |
| 8 | ? – 7 | -17 | 80W | 308 | 83W | 10 | 205 |
| 9 | AX – 3 | -13 | 17W | 245 | 20W | 2 | 222 |
| 10 | CKI – 29 | -20 | 13W | 241 | 16W | 11 | 210 |
| 11 | FAI – 37 | -12 | 07W | 235 | 10W | 10 | 216 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.