Daily Sunspot Evaluation
Observation Sheet Monday, 19 August 1968
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)
- 7
- Number of spots (f)
- 110
- Relative number (R)
- 180
- Observer
- LT
- Reading
- all checks consistent
- File
- 19680819.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 6 | 7 | 03E | 18 | |||
| 2 | J – 4 | 27 | 37E | 344 | |||
| 3 | A – 1 | 9 | 44E | 337 | |||
| 4 | E – 50 | -12 | 08E | 13 | |||
| 5 | E – 44 | -15 | 12W | 33 | |||
| 6 | J – 1 | -17 | 36W | 57 | |||
| 7 | ? – 4 | 14 | 80W | 101 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.