Daily Sunspot Evaluation
Observation Sheet Thursday, 17 May 1984
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)
- 5
- Number of spots (f)
- 47
- Relative number (R)
- 97
- Observer
- HG
- Reading
- all checks consistent
- File
- 19840517.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | FKC – 24 | 8 | 61W | 152 | 64W | 30 | 94 |
| 2 | BRO – 3 | -12 | 58W | 149 | 61W | 5 | 95 |
| 3 | AXX – 1 | -11 | 04W | 95 | 07W | - | 93 |
| 4 | CAI – 18 | -14 | 03E | 88 | 96 | ||
| 5 | HAX – 1 | -14 | 41E | 50 | 97 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.