condition mean min max 4 h after light 12.932164666666667 8.639434 18.43393 8 h after light 8.817870333333333 4.198709 13.516960000000001 12 h after light 12.659237 9.574161 17.72936 16 h after light 18.599665666666667 9.843316999999999 28.77954 4 h after dark 8.456513 5.871464 9.951416 8 h after dark 10.732320666666666 7.5817619999999994 14.523