Daily Sunspot Evaluation
Observation Sheet Tuesday, 19 May 1970
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)
- 12
- Number of spots (f)
- 147
- Relative number (R)
- 267
- Observer
- SM
- Reading
- all checks consistent
- File
- 19700519.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 8 | 15 | 43E | 201 | |||
| 2 | ? – 3 | 15 | 78E | 166 | |||
| 3 | B – 6 | -9 | 34E | 210 | |||
| 4 | B – 17 | -10 | 03E | 241 | |||
| 5 | A – 3 | -17 | 16W | 260 | |||
| 6 | G – 3 | -13 | 30W | 274 | |||
| 7 | C – 11 | -15 | 60W | 304 | |||
| 8 | J – 1 | -8 | 36W | 280 | |||
| 9 | E – 24 | -8 | 64W | 308 | |||
| 10 | A – 2 | 2 | 46W | 290 | |||
| 11 | G – 2 | 18 | 52W | 296 | |||
| 12 | F – 67 | 17 | 12W | 256 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.