Daily Sunspot Evaluation
Observation Sheet Monday, 25 March 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)
- 7
- Number of spots (f)
- 163
- Relative number (R)
- 233
- Observer
- YK
- Reading
- all checks consistent
- File
- 19910325.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 3 | 15 | 01E | 171 | 02E | 3.5 | 134 |
| 2 | AR – 4 | -1 | 59W | 231 | 58W | 2 | 122 |
| 3 | CAI – 14 | -13 | 18W | 190 | 17W | 8 | 126 |
| 4 | FKC – 103 | -24 | 15W | 187 | 14W | 20.5 | 127 |
| 5 | BXI – 18 | -11 | 07E | 165 | 08E | 7 | 135 |
| 6 | AR – 3 | -21 | 14E | 158 | 15E | 1 | 128 |
| 7 | EAC – 18 | -14 | 33E | 139 | 34E | 13.5 | 129 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.