condition mean min max 0 h after light 0.0 0.0 0.0 2 h after light 0.1759065 0.0 0.351813 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 2 h after dark 0.0 0.0 0.0 4 h after dark 0.1393615 0.0 0.278723 8 h after dark 0.1506535 0.0 0.301307 12 h after dark 0.3742365 0.0 0.748473