Cyrus has always gone blue for 3 days and then shed 3 days after he clears up. This last shed he seemed to be blue for 4 days and then shed 4 days after he cleared. Now, I had family in town so he didn't have my undivided attention so I am not 100% on the 4/4 shed cycle. I think it just may depend on the snakey. I think there are definately averages, but a certainty I think us unlikely!!