Daily Sunspot Evaluation
Observation Sheet Thursday, 22 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)
- 131
- Relative number (R)
- 211
- Observer
- MB
- Reading
- all checks consistent
- File
- 19900322.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BAI – 16 | 17 | 08W | 360 | 10W | 3.5 | 117 |
| 2 | AR – 1 | -20 | 27W | 19 | 29W | 0.5 | 115 |
| 3 | FKC – 44 | -34 | 24W | 16 | 26W | 22 | 114 |
| 4 | AX – 2 | -11 | 06E | 346 | 04E | 0.5 | 119 |
| 5 | CAI – 19 | -13 | 20E | 332 | 18E | 07 | 123 |
| 6 | EAO – 31 | -33 | 31E | 321 | 29E | 13 | 122 |
| 7 | CAO – 6 | -18 | 38E | 314 | 36E | 3 | 124 |
| 8 | EKO – 12 | -7 | 50E | 302 | 48E | 15 | 126 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.