Daily Sunspot Evaluation
Observation Sheet Thursday, 18 August 1994
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)
- 4
- Number of spots (f)
- 13
- Relative number (R)
- 53
- Observer
- HÇ0
- Reading
- all checks consistent
- File
- 19940818.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EAC – 7 | -12 | 56W | 34 | 58W | 11.5 | 126 |
| 2 | HA – 1 | -5 | 18W | 356 | 20W | 1 | 125 |
| 3 | AX – 1 | -44 | 29E | 309 | 27E | - | 128 |
| 4 | HA – 4 | -44 | 37E | 301 | 35E | 3 | 129 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.