Today when I went to feed the boys I noticed Blue's sheath was very swollen(I'll post pics at the end). I admit it has been long time since I cleaned it. So I decided to clean it while he was eating.
1 There is an average of 1460 hours of sunlight per year (of a possible 4383) with an average of 3:59 of sunlight per day. 2  It is sunny 33.3% of daylight hours.
As everybody knows the amount of sunlight varies seasonally, both in intensity and duration. Summer brings long days and at any given time of day, the sun is higher in the sky and hence more powerful than in winter. The maximum sunlight intensity on a bright summer day may be around 1400 W/m2 whereas it may be less than half that amount in winter. In any given year, monthly sunshine hours and hence PV output will vary, but on average output dips in winter and rises in summer.