condition mean min max 4 h after light 4.98463 0.0 9.96926 8 h after light 2.7044 0.0 5.4088 12 h after light 0.0 0.0 0.0 4 h after dark 2.15555 0.0 4.3111 8 h after dark 1.080205 0.0 2.16041 12 h after dark 0.0 0.0 0.0