Daily Sunspot Evaluation
Observation Sheet Wednesday, 16 May 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)
- 6
- Number of spots (f)
- 91
- Relative number (R)
- 151
- Observer
- MB
- Reading
- all checks consistent
- File
- 19900516.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 2 | 18 | 36W | 23 | 39W | — | 195 |
| 2 | ESC – 10 | 23 | 03W | 350 | 06W | 11 | 198 |
| 3 | CAI – 13 | 28 | 15E | 332 | 12E | 14 | 201 |
| 4 | DKC – 19 | 34 | 28E | 319 | 25E | 8.5 | 202 |
| 5 | AX – 2 | -16 | 43W | 30 | 46W | 2 | 193 |
| 6 | FKC – 45 | -16 | 37E | 310 | 34E | 16 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.