Daily Sunspot Evaluation
Observation Sheet Saturday, 3 February 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)
- 10
- Number of spots (f)
- 61
- Relative number (R)
- 161
- Observer
- HE
- Reading
- all checks consistent
- File
- 19900203.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 2 | 25 | 75W | 324 | 75W | 12 | 48 |
| 2 | AX – 1 | 7 | 62W | 311 | 62W | 0.5 | 60 |
| 3 | HS – 1 | 11 | 59W | 308 | 59W | 2 | 43 |
| 4 | BRI – 9 | 14 | 53W | 302 | 53W | 6.5 | 55 |
| 5 | HS – 8 | 23 | 16W | 265 | 16W | 5 | 53 |
| 6 | DAI – 14 | 15 | 05W | 254 | 05W | 6.5 | 61 |
| 7 | CAI – 16 | 8 | 00 | 249 | 00 | 9 | 58 |
| 8 | ? – 3 | -12 | 83W | 332 | 83W | 8 | 41 |
| 9 | CAI – 5 | -15 | 65W | 314 | 65W | 6 | 50 |
| 10 | AX – 2 | -13 | 07E | 242 | 07E | 1 | 62 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.