condition mean min max 4 h after light 4.069455 3.68154 4.45737 8 h after light 2.949315 2.05923 3.8394 12 h after light 3.9102449999999997 3.82099 3.9995 4 h after dark 5.31728 4.23412 6.63778 8 h after dark 5.774013333333333 5.69316 5.85999 12 h after dark 4.34969 3.7896 4.90975