Daily Sunspot Evaluation
Observation Sheet Sunday, 15 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)
- 3
- Number of spots (f)
- 49
- Relative number (R)
- 79
- Observer
- TA
- Reading
- all checks consistent
- File
- 19980315.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | IAI – 13 | -41 | 23W | 61 | 25W | 12.5 | 436 |
| 2 | EK – 35 | -22 | 05E | 33 | 03E | 12 | 48 |
| 3 | HS – 1 | -17 | 16E | 22 | 14E | 2 | 48 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.