condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.064762 0.0 0.129524 12 h after light 0.059057 0.0 0.118114 4 h after dark 0.1556025 0.10473 0.206475 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0