condition mean min max ZT0-3 1677.300414 1677.300414 1677.300414 ZT4-7 1307.7751305000002 1307.7751305000002 1307.7751305000002 ZT8-11 1006.153161 1006.153161 1006.153161 ZT12-15 1240.0362565 1240.0362565 1240.0362565 ZT16-19 913.9886065 913.9886065 913.9886065 ZT20-23 983.0985565000001 983.0985565000001 983.0985565000001