condition mean min max 4 h after light 3.6294776666666664 3.5179199999999997 3.809099 8 h after light 2.65057 1.937181 3.132393 12 h after light 2.2710506666666666 1.7597639999999999 3.144011 16 h after light 9.441946666666666 5.945188 14.964160000000001 4 h after dark 28.610473333333335 22.369889999999998 34.990390000000005 8 h after dark 4.773246 3.834767 5.867483999999999