Daily Sunspot Evaluation
Observation Sheet Saturday, 27 February 1999
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)
- 5
- Number of spots (f)
- 35
- Relative number (R)
- 85
- Observer
- HE
- Reading
- all checks consistent
- File
- 19990227.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DRI – 14 | 28 | 11E | 100 | 08E | 9 | |
| 2 | DRI – 13 | 28 | 37E | 74 | 34E | 6 | |
| 3 | HR – 3 | 31 | 52E | 59 | 49E | 1 | |
| 4 | AX – 2 | -24 | 30W | 141 | 33W | 2 | |
| 5 | CRO – 3 | -25 | 15E | 96 | 12E | 10 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.