condition mean min max 4 h after light 62.1235 58.3129 65.9341 8 h after light 60.78635 59.4903 62.0824 12 h after light 57.0246 51.2079 62.8413 4 h after dark 62.9859 58.8141 67.1577 8 h after dark 54.4924 53.7027 55.2821 12 h after dark 66.67325 65.463 67.8835