Daily Sunspot Evaluation
Observation Sheet Tuesday, 6 March 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)
- 7
- Number of spots (f)
- 69
- Relative number (R)
- 139
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19900306.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAI – 11 | 30 | 30W | 233 | 33W | 7.5 | 100 |
| 2 | HK – 7 | 29 | 19E | 184 | 16E | 4 | 102 |
| 3 | AR – 1 | 12 | 61E | 142 | 58E | 0.5 | 104 |
| 4 | HA – 4 | -19 | 64W | 267 | 67W | 1.5 | 95 |
| 5 | AX – 2 | -23 | 37W | 240 | 40W | - | 99 |
| 6 | BRI – 21 | -15 | 16W | 219 | 19W | 6 | 105 |
| 7 | DKC – 23 | -12 | 27E | 176 | 24E | 9.5 | 103 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.