Daily Sunspot Evaluation
Observation Sheet Sunday, 1 April 1984
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)
- 50
- Relative number (R)
- 110
- Observer
- HG
- Reading
- counts consistent, some coordinates doubtful
- File
- 19840401.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CSI – 5 | 21 | 28E | 310 | 26E | 45 | 65 |
| 2 | BXI – 7 | -9 | 49W | 27 | 51W | 6 | 65 |
| 3 | CSI – 4 | -9 | 13W | 325 ⚠ | 15W | 675 | 65 |
| 4 | FKC – 27 | -13 | 09E | 329 | 07E | 14 | 65 |
| 5 | HAX – 3 | -15 | 23E | 315 | 21E | 2 | 65 |
| 6 | CAI – 4 | -10 | 56E | 282 | 54E | 6 | 66 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.