Observation sheet 27.01.1979 · Istanbul University Observatory Solar Observations

Daily Sunspot Evaluation

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 →

No	Group (class – spots)	B	Δ L	L	Δ L_f	Margin no.
1	G – 4	-22	17E	77	17E	54
2	A – 4	-31	21E	73	21E	64
3	B – 13	-28	09E	85	09E	69
4	H – 10	-26	01E	93	01E	55
5	D – 22	-14	13W	107	13W	57
6	H – 19	-27	46W	140	46W	50
7	A – 1	-29	60W	154	60W	70
8	J – 1	-15	78W	172	78W	37
9	C – 4	-12	51W	145	51W	45
10	D – 15	9	41W	135	41W	48
11	E – 17	13	45W	139	45W	49
12	J – 1	22	71W	165	71W	71
13	D – 9	18	42W	136	42W	59
14	D – 21	20	20W	114	20W	46

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