Daily Sunspot Evaluation
Observation Sheet Sunday, 28 May 1967
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)
- 20
- Number of spots (f)
- 246
- Relative number (R)
- 446
- Observer
- LT
- Reading
- all checks consistent
- File
- 19670528.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 7 | 22 | 21E | 169 | |||
| 2 | D – 16 | 19 | 21E | 169 | |||
| 3 | B – 4 | 28 | 33E | 157 | |||
| 4 | ? – 2 | 22 | 70E | 120 | |||
| 5 | ? – 2 | 23 | 82E | 108 | |||
| 6 | A – 2 | 20 | 66E | 124 | |||
| 7 | H – 4 | -18 | 52E | 138 | |||
| 8 | B – 5 | -23 | 23E | 167 | |||
| 9 | E – 24 | -20 | 19W | 209 | |||
| 10 | A – 1 | -27 | 36W | 226 | |||
| 11 | H – 1 | -16 | 28W | 218 | |||
| 12 | H – 2 | 20 | 49W | 239 | |||
| 13 | F – 120 | 26 | 35W | 225 | |||
| 14 | H – 5 | 28 | 51W | 241 | |||
| 15 | B – 11 | 28 | 50W | 240 | |||
| 16 | A – 2 | 30 | 47W | 237 | |||
| 17 | E – 31 | 13 | 8W | 198 | |||
| 18 | H – 3 | 10 | 7W | 197 | |||
| 19 | A – 2 | 28 | 19W | 209 | |||
| 20 | A – 2 | 22 | 1W | 191 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.