Daily Sunspot Evaluation
Observation Sheet Sunday, 1 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)
- 18
- Number of spots (f)
- 249
- Relative number (R)
- 429
- Observer
- MB
- Reading
- all checks consistent
- File
- 19900701.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 3 | 14 | 70W | 168 | 73W | 1 | 273 |
| 2 | HS – 1 | 27 | 45W | 143 | 48W | 2 | 262 |
| 3 | AX – 2 | 5 | 20W | 118 | 23W | 0.5 | 269 |
| 4 | CSO – 14 | 11 | 01E | 97 | 02W | 6 | 273 |
| 5 | DKC – 36 | 8 | 18E | 80 | 15E | 10 | 276 |
| 6 | EKC – 29 | 16 | 54E | 44 | 51E | 11 | 280 |
| 7 | AX – 2 | 16 | 64E | 34 | 61E | 2 | 285 |
| 8 | ? – 1 | 22 | 75E | 23 | 72E | 3.5 | 286 |
| 9 | AR – 5 | -8 | 68W | 166 | 71W | 3.5 | 270 |
| 10 | BRI – 12 | -43 | 34W | 132 | 37W | 7 | 282 |
| 11 | FKI – 33 | -22 | 21W | 119 | 24W | 19.5 | 266 |
| 12 | DAI – 30 | -12 | 09E | 89 | 06E | 7.5 | 274 |
| 13 | AX – 2 | -4 | 09E | 89 | 06E | 0.5 | 287 |
| 14 | BXI – 6 | -12 | 17E | 81 | 14E | 7.5 | 283 |
| 15 | EAC – 46 | -21 | 24E | 74 | 21E | 12.5 | 279 |
| 16 | CAI – 5 | -14 | 27E | 71 | 24E | 5 | 281 |
| 17 | DAC – 16 | -29 | 45E | 53 | 42E | 10 | 278 |
| 18 | BRI – 6 | -17 | 52E | 46 | 49E | 05 | 284 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.