Daily Sunspot Evaluation
Observation Sheet Wednesday, 12 May 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)
- 7
- Number of spots (f)
- 67
- Relative number (R)
- 137
- Observer
- SB0
- Reading
- all checks consistent
- File
- 19990512.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HH – 8 | 21 | 03W | 219 | 05W | 6.5 | Ht-8 |
| 2 | EAC – 27 | 24 | 21E | 193 | 19E | ~14.5 | |
| 3 | AX – 1 | 3 | 67E | 147 | 65E | - | |
| 4 | DSO – 8 | -25 | 19W | 233 | 21W | 8 | |
| 5 | GSI – 11 | -18 | 11W | 225 | 13W | 5 | Do-14 |
| 6 | GSD – 11 | -28 | 16E | 198 | 14E | ~11.5 | Cao- |
| 7 | HS – 1 | -19 | 64E | 150 | 62E | 1.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.