condition mean min max ZT0-3 163.74869 163.74869 163.74869 ZT4-7 54.894762 54.894762 54.894762 ZT8-11 45.903908 45.903908 45.903908 ZT12-15 65.692132 65.692132 65.692132 ZT16-19 70.77124950000001 70.77124950000001 70.77124950000001 ZT20-23 53.6737035 53.6737035 53.6737035