Daily Sunspot Evaluation
Observation Sheet Sunday, 29 April 1990
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)
- 7
- Number of spots (f)
- 21
- Relative number (R)
- 91
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19900429.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAI – 6 | 16 | 58W | 266 | 58W | 10 | 175 |
| 2 | BRO – 2 | 27 | 38W | 246 | 38W | 5 | 176 |
| 3 | HA – 2 | 13 | 06W | 214 | 06W | 2 | 179 |
| 4 | HL – 1 | 20 | 48E | 160 | 48E | 3 | 183 |
| 5 | EAI – 7 | -21 | 53W | 261 | 53W | 11 | 182 |
| 6 | AX – 1 | -21 | 36W | 244 | 36W | - | 184 |
| 7 | CAO – 2 | -5 | 05W | 213 | 05W | 10 | 180 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.