condition mean min max 0 h after light 49.0421 48.089 49.9952 4 h after light 33.5557 31.3808 35.7306 8 h after light 30.1092 29.0334 31.185 4 h after dark 36.787400000000005 35.1158 38.459 8 h after dark 32.21025 31.7967 32.6238 12 h after dark 40.06835 29.6381 50.4986