Daily Sunspot Evaluation

Observation Sheet Thursday, 26 December 1991

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)
6
Number of spots (f)
162
Relative number (R)
222
Observer
TK
Reading
all checks consistent
File
19911226.jpg
26.12.1991 photosphere drawing

Sunspot groups

NoGroup (class – spots) BΔ LLΔ LfU Margin no.
1HS – 5 -1469W 198 70W3 680
2HA – 4 -2124W 153 25W2.5 684
3EKC – 54 -1412W 141 13W11.5 689
4FKC – 86 -1832E 97 31E20 690
5EKC – 10 -1552E 77 51E17.5 691
6HA – 3 -475E 54 74E3 692

Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.

‹ Previous Sheets of 1991 Next ›