Daily Sunspot Evaluation
Observation Sheet Thursday, 4 March 1999
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)
- 60
- Relative number (R)
- 160
- Observer
- MB
- Reading
- all checks consistent
- File
- 19990304.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CKI – 6 | 28 | 58W | 103 | 60W | ~12 | |
| 2 | EHC – 14 | 19 | 26W | 71 | 28W | ~12 | |
| 3 | HR – 2 | 29 | 21W | 66 | 23W | ~1 | |
| 4 | DAO – 12 | 32 | 11W | 56 | 13W | ~5.5 | |
| 5 | AX – 1 | 24 | 49E | 356 | 47E | - | |
| 6 | DRO – 4 | -16 | 44W | 89 | 46W | ~3.5 | |
| 7 | CRF – 5 | -15 | 38W | 83 | 40W | ~5 | |
| 8 | AX – 2 | -19 | 20W | 65 | 22W | ~0.5 | |
| 9 | CAI – 9 | -25 | 35E | 10 | 33E | ~4 | |
| 10 | HA – 5 | -31 | 40E | 5 | 38E | ~4.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.