condition mean min max 0 h after light 0.0 0.0 0.0 2 h after light 0.140539 0.0 0.281078 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 0.0 0.0 0.0 8 h after dark 0.0760845 0.0 0.152169 12 h after dark 0.0 0.0 0.0