condition mean min max ZT0-3 12.3155 10.886849999999999 13.744150000000001 ZT4-7 22.2302 22.2302 22.2302 ZT8-11 54.98835 54.98835 54.98835 ZT12-15 0 0 0 ZT16-19 49.36835 49.36835 49.36835 ZT20-23 31.41905 31.41905 31.41905