Daily Sunspot Evaluation
Observation Sheet Wednesday, 27 April 1983
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)
- 9
- Number of spots (f)
- 58
- Relative number (R)
- 148
- Observer
- TÖ
- Reading
- counts consistent, some coordinates doubtful
- File
- 19830427.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HAX – 2 | 11 | 29W | 225 ⚠ | 81W | 1.25 | 96 |
| 2 | BXO – 3 | 13 | 11E | 135 | 09E | 2.25 | 107 |
| 3 | CAO – 4 | 18 | 14E | 132 | 12E | 5.5 | 109 |
| 4 | HAX – 9 | -12 | 30W | 176 | 32W | 3.5 | 99 |
| 5 | DAI – 6 | -12 | 11E | 135 | 09E | 6 | 102 |
| 6 | DKI – 11 | -17 | 21E | 125 | 19E | 5.5 | 103 |
| 7 | CAI – 7 | -17 | 31E | 115 | 29E | 3.5 | 111 |
| 8 | CAI – 13 | -5 | 37E | 109 | 35E | 5 | 104 |
| 9 | ARX – 3 | -5 | 44E | 102 | 42E | 2.75 | 108 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.