Daily Sunspot Evaluation
Observation Sheet Sunday, 28 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)
- 27
- Relative number (R)
- 67
- Observer
- TA
- Reading
- counts consistent, some coordinates doubtful
- File
- 19930328.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HR – 1 | 22 | 09E | 196 | 09E | 0.5 | 77 |
| 2 | EAI – 20 | 5 | 18E | 158 ⚠ | 48E | 14 | 79 |
| 3 | ? – 3 | -12 | 8W | 286 ⚠ | 8W | - | 65 |
| 4 | HA – 3 | -12 | 70E | 135 | 70E | 2 | 81 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.