condition mean min max ZT0-3 1890.0149999999999 1776.955 2003.0749999999998 ZT4-7 2549.875 2549.875 2549.875 ZT8-11 2379.62 2379.62 2379.62 ZT12-15 0 0 0 ZT16-19 1287.13 1287.13 1287.13 ZT20-23 1538.0149999999999 1538.0149999999999 1538.0149999999999