condition mean min max 4 h after light 3.592859 3.493982 3.759214 8 h after light 2.539533 1.657498 3.119895 12 h after light 1.6863186666666667 1.462275 1.8674810000000002 16 h after light 3.5013763333333334 3.236381 3.9412949999999998 4 h after dark 2.893345333333333 2.596441 3.3359629999999996 8 h after dark 3.8397386666666664 1.87339 7.657216