Daily Sunspot Evaluation
Observation Sheet Wednesday, 17 March 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)
- 4
- Number of spots (f)
- 31
- Relative number (R)
- 71
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19930317.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ESI – 19 | 16 | 02W | 354 | 04W | 13 | 60 |
| 2 | HS – 1 | -18 | 51E | 301 | 49E | 2 | 63 |
| 3 | HA – 5 | -18 | 63E | 289 | 61E | 4 | 66 |
| 4 | BXO – 6 | -13 | 72E | 280 | 70E | 10 | 65 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.