Daily Sunspot Evaluation
Observation Sheet Tuesday, 27 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)
- 9
- Number of spots (f)
- 135
- Relative number (R)
- 225
- Observer
- HÇ0
- Reading
- all checks consistent
- File
- 19900327.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BRI – 9 | 23 | 45W | 330 | 46W | 5 | 129 |
| 2 | CSI – 6 | 27 | 50E | 235 | 49E | 18 | 136 |
| 3 | ? – 4 | -35 | 77W | 2 | 78W | 7 | 114 |
| 4 | FKC – 54 | -13 | 48W | 333 | 49W | 18 | 123 |
| 5 | CKI – 18 | -31 | 37W | 322 | 38W | 10 | 122 |
| 6 | HK – 14 | -18 | 28W | 313 | 29W | 4 | 124 |
| 7 | AX – 4 | -20 | 21W | 306 | 22W | 2 | 134 |
| 8 | CAO – 25 | -8 | 18W | 303 | 19W | 16 | 126 |
| 9 | HA – 1 | -11 | 60E | 225 | 59E | 2 | 139 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.