Daily Sunspot Evaluation
Observation Sheet Thursday, 4 February 1993
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)
- 25
- Relative number (R)
- 75
- Observer
- TA
- Reading
- all checks consistent
- File
- 19930204.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DRI – 15 | 4 | 07E | 165 | 05E | 5 | 31 |
| 2 | EKO – 5 | 16 | 57E | 115 | 55E | 13 | 29 |
| 3 | HA – 2 | 10 | 60E | 112 | 58E | 1 | 28 |
| 4 | HA – 2 | -15 | 20W | 192 | 22W | 1 | 26 |
| 5 | HS – 1 | -11 | 49E | 123 | 47E | 1 | 30 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.