Daily Sunspot Evaluation
Observation Sheet Monday, 16 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)
- 8
- Number of spots (f)
- 43
- Relative number (R)
- 123
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19900716.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAI – 15 | 16 | 67W | 327 | 71W | 14 | 298 |
| 2 | DAI – 9 | 6 | 61W | 321 | 65W | 10 | 299 |
| 3 | AX – 2 | 13 | 32W | 292 | 36W | - | 293 |
| 4 | BRO – 6 | 18 | 02W | 262 | 06W | 5.5 | 303 |
| 5 | HA – 2 | 10 | 49E | 211 | 45E | 1.5 | 305 |
| 6 | HA – 5 | -9 | 58W | 318 | 62W | 2 | 300 |
| 7 | AR – 1 | -15 | 49W | 309 | 53W | 0.5 | 289 |
| 8 | AX – 3 | -19 | 01W | 261 | 05W | 1 | 301 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.