Daily Sunspot Evaluation
Observation Sheet Monday, 3 September 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)
- 8
- Number of spots (f)
- 54
- Relative number (R)
- 134
- Observer
- HÇ0
- Reading
- all checks consistent
- File
- 19900903.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EKI – 21 | 14 | 63W | 34 | 66W | 13 | 439 |
| 2 | HS – 1 | 16 | 01E | 330 | 02W | 2 | 401 |
| 3 | HA – 1 | 12 | 12E | 319 | 09E | 1 | 405 |
| 4 | HK – 2 | 3 | 67E | 264 | 64E | 4 | 409 |
| 5 | AR – 2 | -19 | 14W | 345 | 17W | 1 | 404 |
| 6 | CAI – 15 | -13 | 05W | 336 | 8W | 8 | 410 |
| 7 | BRO – 4 | -13 | 18E | 313 | 15E | 4.5 | 402 |
| 8 | HA – 8 | -15 | 45E | 286 | 42E | 5 | 410 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.