Daily Sunspot Evaluation
Observation Sheet Wednesday, 27 June 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)
- 10
- Number of spots (f)
- 102
- Relative number (R)
- 202
- Observer
- MB
- Reading
- all checks consistent
- File
- 19900627.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 1 | 23 | 67W | 218 | 70W | - | 271 |
| 2 | AR – 4 | 15 | 13W | 164 | 16W | 2.5 | 273 |
| 3 | BRI – 5 | 23 | 02W | 153 | 05W | 3 | 275 |
| 4 | HS – 3 | 27 | 07E | 144 | 04E | 2 | 262 |
| 5 | ? – 6 | 8 | 72E | 79 | 69E | 7.5 | 276 |
| 6 | BRI – 17 | -9 | 29W | 180 | 32W | 7.5 | 264 |
| 7 | BRO – 19 | -8 | 13W | 164 | 16W | 5 | 270 |
| 8 | FKC – 38 | -22 | 31E | 120 | 28E | 19.5 | 266 |
| 9 | BRI – 4 | -12 | 65E | 86 | 62E | 4 | 274 |
| 10 | ? – 5 | -21 | 78E | 73 | 75E | 14 | 272 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.