Daily Sunspot Evaluation
Observation Sheet Thursday, 14 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)
- 71
- Relative number (R)
- 151
- Observer
- YK
- Reading
- counts consistent, some coordinates doubtful
- File
- 19910314.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 1 | 15 | 48W | 6 | 48W | 0.5 | 104 |
| 2 | AX – 1 | -7 | 46W | 354 ⚠ | 46W | 0.5 | 118 |
| 3 | FAC – 37 | -24 | 22W | 340 | 22W | 2.9 | 109 |
| 4 | CSO – 2 | -12 | 17W | 335 | 17W | 4 | 116 |
| 5 | DKC – 26 | -9 | 32E | 286 | 32E | 11 | 117 |
| 6 | HA – 2 | -22 | 43E | 275 | 43E | 4.5 | 119 |
| 7 | AX – 1 | -8 | 51E | 267 | 51E | 120 | |
| 8 | AX – 1 | -12 | 74E | 244 | 74E | 121 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.