Daily Sunspot Evaluation
Observation Sheet Monday, 4 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)
- 4
- Number of spots (f)
- 22
- Relative number (R)
- 62
- Observer
- TA
- Reading
- all checks consistent
- File
- 19910304.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAI – 15 | 6 | 32°W | 124 | 35°W | 9.5 | 95 |
| 2 | AX – 5 | 9 | 29°W | 121 | 32°W | 3° | 101 |
| 3 | AX – 1 | 8 | 55°E | 37 | 52°E | 1° | 102 |
| 4 | AX – 1 | 12 | 65°E | 27 | 62°E | 1° | 103 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.