Daily Sunspot Evaluation
Observation Sheet Saturday, 2 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)
- 8
- Number of spots (f)
- 38
- Relative number (R)
- 118
- Observer
- HE
- Reading
- all checks consistent
- File
- 19910302.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAI – 14 | 4 | 05W | 123 | 08W | 8 | 95 |
| 2 | AX – 2 | 9 | 05W | 123 | 08W | 2 | 101 |
| 3 | DAI – 10 | -16 | 72W | 190 | 75W | 9 | 85 |
| 4 | DKO – 4 | -23 | 72W | 190 | 75W | 10 | 84 |
| 5 | AX – 2 | -12 | 52W | 170 | 55W | - | 96 |
| 6 | BRO – 4 | -8 | 40W | 158 | 43W | 7.5 | 97 |
| 7 | AX – 1 | -17 | 37W | 155 | 40W | - | 100 |
| 8 | AR – 1 | -11 | 33W | 151 | 36W | 1 | 98 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.