Daily Sunspot Evaluation
Observation Sheet Tuesday, 31 March 1998
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)
- 44
- Relative number (R)
- 84
- Observer
- TÇ
- Reading
- all checks consistent
- File
- 19980331.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 1 | -27 | 67W | 251 | 67W | - | 5^56 |
| 2 | FKC – 27 | -25 | 45W | 229 | 47W | 23 | 5^54 |
| 3 | EAO – 13 | -22 | 45E | 139 | 47W | 11 | 5^52 |
| 4 | HA – 3 | -22 | 56E | 128 | 56E | 4 | 5^58 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.