condition mean min max 0 h after light 0.0 0.0 0.0 2 h after light 0.0 0.0 0.0 4 h after light 0.0 0.0 0.0 8 h after light 1.344945 0.0 2.68989 12 h after light 0.994825 0.0 1.98965 2 h after dark 0.975515 0.0 1.95103 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0