Daily Sunspot Evaluation
Observation Sheet Wednesday, 12 May 2004
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)
- 5
- Number of spots (f)
- 18
- Relative number (R)
- 68
- Observer
- ZFB
- Reading
- all checks consistent
- File
- 20040512.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HM – 3 | -9 | 23E | 197 | 20E | 4 | 80 |
| 2 | CRO – 5 | -2 | 29E | 191 | 26E | 5 | 81 |
| 3 | HR – 2 | -4 | 39E | 181 | 36E | -1 | 82 |
| 4 | DRI – 6 | -2 | 45E | 175 | 42E | 4.5 | 83 |
| 5 | HA – 2 | -12 | 04W | 224 | 07W | 1 | 84 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.