condition mean min max 4 h after light 12.912937 11.87075 13.955124 8 h after light 11.905709 11.442826 12.368592 12 h after light 12.017615500000002 11.970814 12.064417 4 h after dark 10.9097555 10.376685 11.442826 8 h after dark 10.792048 10.663336 10.92076 12 h after dark 10.552688 10.552688 10.552688