Daily Sunspot Evaluation
Observation Sheet Saturday, 7 July 1990
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)
- 12
- Number of spots (f)
- 102
- Relative number (R)
- 222
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19900707.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 2 | 11 | 80W | 98 | 83W | 1 | 279 |
| 2 | DKI – 14 | 9 | 61W | 79 | 64W | 10 | 276 |
| 3 | BXO – 3 | 22 | 41W | 59 | 44W | 3 | 280 |
| 4 | DKI – 16 | 17 | 26W | 44 | 29W | 10 | 280 |
| 5 | EAO – 11 | 21 | 04W | 22 | 07W | 11 | 286 |
| 6 | EHO – 4 | -13 | 73W | 91 | 76W | 17 | 274 |
| 7 | BXO – 2 | -28 | 60W | 78 | 63W | 3 | 251 |
| 8 | DAC – 19 | -14 | 57W | 75 | 60W | 9 | 281 |
| 9 | CAI – 23 | -22 | 55W | 73 | 58W | 12 | 277 |
| 10 | BXI – 5 | -7 | 32W | 50 | 35W | 4 | 288 |
| 11 | CAO – 2 | -18 | 30W | 48 | 33W | 10 | 284 |
| 12 | HS – 1 | -16 | 69E | 309 | 66E | 2.5 | 289 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.