Daily Sunspot Evaluation
Observation Sheet Thursday, 31 March 1988
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)
- 6
- Number of spots (f)
- 70
- Relative number (R)
- 130
- Observer
- HG
- Reading
- counts consistent, some coordinates doubtful
- File
- 19880331.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | 22 | 16W | 225 ⚠ | 19W | 61 | |
| 2 | EAF – 42 | 18 | 09W | 158 | 12W | 12 | 56 |
| 3 | HAX – 2 | -35 | 45W | 194 | 48W | 3.5 | 55 |
| 4 | AXX – 2 | 16 | 55W | 204 | 58W | 2 | 62 |
| 5 | BXO – 11 | -23 | 03W | 152 | 06W | 6 | 60 |
| 6 | DKF – 12 | -22 | 16E | 133 | 13E | 10 | 59 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.