condition mean min max 3 h after light 0.023797 0.0 0.071391 6 h after light 0.0 0.0 0.0 9 h after light 0.0 0.0 0.0 12 h after light 0.030922275 0.0 0.0666288 3 h after dark 0.049007999999999996 0.0 0.147024 6 h after dark 0.231424 0.127019 0.420758 9 h after dark 0.24262033333333333 0.108011 0.33475 12 h after dark 0.03640085 0.0 0.0728017