Daily Sunspot Evaluation
Observation Sheet Saturday, 15 July 1978
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)
- 6
- Number of spots (f)
- 72
- Relative number (R)
- 132
- Observer
- GA
- Reading
- all checks consistent
- File
- 19780715.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 6 | 16 | 22E | 141 | 19E | ||
| 2 | J – 1 | 22 | 53E | 110 | 50E | ||
| 3 | J – 1 | 19 | 54E | 109 | 51E | ||
| 4 | C – 5 | -24 | 43E | 120 | 40E | ||
| 5 | ? – 2 | -23 | 76W | 239 | 79W | ||
| 6 | E – 57 | 17 | 05W | 168 | 08W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.