Daily Sunspot Evaluation
Observation Sheet Monday, 29 February 1988
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)
- 3
- Number of spots (f)
- 29
- Relative number (R)
- 59
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19880229.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HAX – 2 | 19 | 45E | 152 | 43E | 1 | 39 |
| 2 | DAC – 10 | 17 | 52E | 145 | 50E | 8.5 | 40 |
| 3 | DKI – 17 | -21 | 35E | 164 | 31E | 7 | 42 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.