Daily Sunspot Evaluation
Observation Sheet Friday, 19 June 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)
- 8
- Number of spots (f)
- 47
- Relative number (R)
- 127
- Observer
- SM
- Reading
- all checks consistent
- File
- 19700619.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 21 | 32E | 162 | |||
| 2 | A – 1 | 19 | 72E | 122 | |||
| 3 | J – 1 | -4 | 50E | 144 | |||
| 4 | J – 1 | -9 | 09E | 185 | |||
| 5 | H – 3 | 15 | 74W | 268 | |||
| 6 | A – 3 | 16 | 49W | 243 | |||
| 7 | A – 1 | 20 | 65W | 259 | |||
| 8 | F – 36 | 19 | 28W | 222 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.