Daily Sunspot Evaluation
Observation Sheet Sunday, 4 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)
- 8
- Number of spots (f)
- 51
- Relative number (R)
- 131
- Observer
- HE
- Reading
- counts consistent, some coordinates doubtful
- File
- 19900304.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 1 | 15 | 32W | 262 | 35W | - | 97 |
| 2 | DAO – 20 | 31 | 03W | 233 | 06W | 8.5 | 100 |
| 3 | CKI – 9 | 28 | 49E | 181 | 46E | 12.5 | 102 |
| 4 | ? – 2 | -18 | 81W | 311 | 84W | 7 | 84 |
| 5 | AX – 1 | -9 | 68W | 298 | 71W | - | 93 |
| 6 | HS – 2 | -19 | 86W | 266 ⚠ | 39W | 2.5 | 95 |
| 7 | HS – 3 | -21 | 13W | 243 | 16W | 1.5 | 99 |
| 8 | DKC – 13 | -11 | 56E | 174 | 53E | 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.