Daily Sunspot Evaluation
Observation Sheet Thursday, 19 June 1980
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)
- 11
- Number of spots (f)
- 78
- Relative number (R)
- 188
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19800619.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EKI – 16 | 19 | 61W | 280 | 64W | 11 | |
| 2 | CII – 12 | 18 | 01W | 220 | 04W | 75 | |
| 3 | CAZ – 9 | 23 | 08E | 211 | 05E | 4 | |
| 4 | HSX – 2 | 25 | 60E | 159 | 57E | 1 | |
| 5 | HXX – 3 | -13 | 58W | 277 | 61W | 4 | |
| 6 | DIO – 2 | -8 | 25E | 194 | 22E | 4 | |
| 7 | CAI – 13 | -11 | 37E | 182 | 34E | 6 | |
| 8 | AXX – 2 | -17 | 43E | 176 | 40E | 2.5 | |
| 9 | HSX – 2 | -20 | 48E | 171 | 45E | 3 | |
| 10 | DKK – 16 | -28 | 55E | 164 | 57E | 10 | |
| 11 | HXX – 1 | -12 | 64E | 155 | 61E | 15 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.