condition mean min max ZT0-3 34.333149999999996 23.5061 45.160199999999996 ZT4-7 79.1776 79.1776 79.1776 ZT8-11 117.3614 117.3614 117.3614 ZT12-15 78.75365 78.6185 78.8888 ZT16-19 36.03713333333334 28.2435 43.83076666666667 ZT20-23 0 0 0