Daily Sunspot Evaluation
Observation Sheet Saturday, 29 February 1992
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)
- 13
- Number of spots (f)
- 107
- Relative number (R)
- 237
- Observer
- TA
- Reading
- counts consistent, some coordinates doubtful
- File
- 19920229.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HK – 6 | 10 | 59W | 54 | 62W | 7 | 81 |
| 2 | AX – 1 | 15 | 57W | 52 | 60W | - | 104 |
| 3 | CAO – 27 | 7 | 20W | 24 ⚠ | 32W | 13.5 | 86 |
| 4 | CSO – 9 | 15 | 12W | 7 | 15W | 7 | 83 |
| 5 | CAI – 14 | 10 | 04E | 351 | 01E | 4.5 | 90 |
| 6 | HA – 6 | 20 | 09E | 346 | 06E | 2 | 89 |
| 7 | AX – 2 | -10 | 55W | 50 | 58W | - | 109 |
| 8 | HA – 7 | -4 | 41W | 36 | 44W | 3.5 | 80 |
| 9 | DRI – 18 | -11 | 38W | 33 | 41W | 7 | 91 |
| 10 | CSO – 5 | -11 | 21W | 16 | 24W | 6.5 | 85 |
| 11 | AX – 3 | -14 | 14W | 9 | 17W | 1 | 102 |
| 12 | BXO – 5 | -16 | 13E | 342 | 10E | 4.5 | 92 |
| 13 | AX – 4 | -12 | 41E | 314 | 38E | 3 | 93 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.