Observation DataJanuary 24, 2010 1825 UT
Edmond, Oklahoma USA
Seeing: Poor
Sunspot Groups (G): 2
Sunspots (S): 9
Sunspot Number (W): 29
W = (G *10) + S
W = (2 * 10) + 9
W = 29
Telescope: 150 mm f/9 Newtonian stopped to 80 mm.
Eyepieces: 26 mm (50X) and 2X Barlow (100X).
Filter: Orion full aperture.
Sunspot Number = 29Sunspot No. = W
Sunspot Groups = G
No. Sunspots = S
W = (G *10) + S
W = (2 * 10) + 9
W = 29