Daily Sunspot Evaluation
Observation Sheet Thursday, 28 March 2002
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)
- 7
- Number of spots (f)
- 72
- Relative number (R)
- 142
- Observer
- ıH
- Reading
- all checks consistent
- File
- 20020328.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DKC – 18 | 9 | 57W | 79 | 56W | ~10 | |
| 2 | DAO – 11 | 9 | 21W | 41 | 20W | 8.5 | |
| 3 | HA – 1 | 7 | 10E | 10 | 11E | ~1 | |
| 4 | DAO – 6 | 12 | 62E | 318 | 63E | 9.5 | 177 |
| 5 | HA – 3 | -3 | 77W | 97 | 76W | 3 | |
| 6 | EAC – 27 | -14 | 27W | 47 | 26W | 13 | |
| 7 | DAC – 6 | -18 | 32E | 348 | 33E | 5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.