Daily Sunspot Evaluation
Observation Sheet Tuesday, 19 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)
- 8
- Number of spots (f)
- 41
- Relative number (R)
- 121
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19830419.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAI – 6 | 6 | 15E | 238 | 12E | 2.5 | 91 |
| 2 | AXX – 1 | 6 | 23E | 230 | 20E | 92 | |
| 3 | BXO – 4 | 10 | 36E | 217 | 33E | 5 | 96 |
| 4 | DKC – 15 | -29 | 58W | 311 | 61W | 7.5 | 93 |
| 5 | DAO – 8 | -7 | 32W | 285 | 35W | 5.5 | 99 |
| 6 | HRX – 2 | -10 | 23W | 276 | 26W | 1 | 95 |
| 7 | BRO – 3 | -10 | 02W | 255 | 05W | 1.5 | 97 |
| 8 | HRX – 2 | -23 | 47E | 206 | 44E | 1 | 98 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.