Daily Sunspot Evaluation
Observation Sheet Saturday, 16 July 1983
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)
- 9
- Number of spots (f)
- 51
- Relative number (R)
- 141
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19830716.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 3 | 14 | 44W | 213 | 47W | 7 | 183 |
| 2 | DAO – 8 | 18 | 06E | 163 | 03E | 9 | 199 |
| 3 | DXO – 5 | 3 | 07E | 163 | 04E | 4 | 260 |
| 4 | CAI – 7 | 12 | 43E | 126 | 40E | 5 | 197 |
| 5 | HAX – 1 | 15 | 60E | 109 | 57E | 1 | 201 |
| 6 | HAX – 4 | -17 | 49W | 218 | 52W | 4.5 | 188 |
| 7 | AXX – 1 | -12 | 20W | 189 | 23W | - | 196 |
| 8 | DAC – 21 | -15 | 11E | 158 | 08E | 10 | 104 |
| 9 | ARX – 1 | -9 | 26E | 143 | 23E | - | 202 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.