condition mean min max ZT0-3 692.191032 692.191032 692.191032 ZT4-7 59.4818645 59.4818645 59.4818645 ZT8-11 33.7656785 33.7656785 33.7656785 ZT12-15 55.9704465 55.9704465 55.9704465 ZT16-19 541.8018815 541.8018815 541.8018815 ZT20-23 936.8474415000001 936.8474415000001 936.8474415000001