condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0 0.0 0.0 9 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 3 h after dark 0.0 0.0 0.0 6 h after dark 0.042867999999999996 0.0 0.128604 9 h after dark 0.154549 0.0 0.328077 12 h after dark 0.0 0.0 0.0