condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 5.988195 3.69643 8.27996 12 h after light 1.685405 0.0 3.37081 4 h after dark 7.429525 5.89251 8.96654 8 h after dark 13.22305 11.8116 14.6345 12 h after dark 3.901195 2.90712 4.89527