Daily Sunspot Evaluation
Observation Sheet Tuesday, 5 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)
- 10
- Number of spots (f)
- 26
- Relative number (R)
- 126
- Observer
- SG0
- Reading
- all checks consistent
- File
- 19910305.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CKI – 9 | 5 | 47W | 125 | 49W | 10 | 95 |
| 2 | AX – 1 | 8 | 45W | 123 | 47W | - | 101 |
| 3 | AX – 3 | 10 | 41E | 37 | 39E | 2.5 | 102 |
| 4 | HA – 1 | 14 | 52E | 26 | 50E | 1.5 | 103 |
| 5 | ? – 4 | 17 | 75E | 3 | 73E | 9 | 104 |
| 6 | ? – 2 | -22 | 73W | 151 | 75W | 1.5 | 105 |
| 7 | AR – 1 | -15 | 25E | 55 | 21E | 0.5 | 106 |
| 8 | AX – 1 | -18 | 25E | 53 | 23E | - | 107 |
| 9 | HK – 2 | -9 | 75E | 3 | 73E | 3 | 108 |
| 10 | ? – 2 | -23 | 87E | 351 | 85E | - | 109 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.