Daily Sunspot Evaluation
Observation Sheet Tuesday, 2 September 1997
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)
- 37
- Relative number (R)
- 87
- Observer
- HÇ0
- Reading
- all checks consistent
- File
- 19970902.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 3 | 18 | 49W | 123 | 51W | 2 | 69 |
| 2 | AX – 3 | 21 | 37W | 111 | 39W | 1.5 | 67 |
| 3 | FSC – 26 | 29 | 31W | 105 | 33W | 19 | 63 |
| 4 | HR – 4 | 32 | 61E | 13 | 59E | 1 | 76 |
| 5 | AX – 1 | 19 | 68E | 6 | 66E | 1 | 71 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.