condition mean min max 4 h after light 0.01494665 0.0 0.0298933 8 h after light 0.0122043 0.0 0.0244086 12 h after light 0.0149053 0.0 0.0298106 4 h after dark 0.0132163 0.0 0.0264326 8 h after dark 0.01305735 0.0 0.0261147 12 h after dark 0.01082315 0.0 0.0216463