condition mean min max 4 h after light 2.26038 1.96763 2.55313 8 h after light 1.9560499999999998 1.88872 2.02338 12 h after light 2.490215 2.2846 2.69583 4 h after dark 3.324275 2.65595 3.9926 8 h after dark 2.84292 2.40583 3.28001 12 h after dark 3.334175 2.97082 3.69753