Daily Sunspot Evaluation
Observation Sheet Tuesday, 18 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)
- 6
- Number of spots (f)
- 34
- Relative number (R)
- 94
- Observer
- ZFB
- Reading
- all checks consistent
- File
- 20040518.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAI – 12 | 10 | 51W | 192 | 59W | 8.5 | 85 |
| 2 | HA – 2 | 17 | 48E | 93 | 45E | 2.5 | 88 |
| 3 | HA – 2 | -9 | 57W | 198 | 60W | 2 | 80 |
| 4 | DAO – 11 | -3 | 35W | 176 | 38W | 8 | 83 |
| 5 | DRI – 6 | -11 | 06E | 135 | 03E | 4 | 90 |
| 6 | HS – 1 | -9 | 22E | 119 | 19E | 2 | 86 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.