condition mean min max ZT0-3 205.73000000000002 205.73000000000002 205.73000000000002 ZT4-7 214.5085 214.5085 214.5085 ZT8-11 178.50799999999998 178.50799999999998 178.50799999999998 ZT12-15 178.124 178.124 178.124 ZT16-19 211.2375 211.2375 211.2375 ZT20-23 198.9695 198.9695 198.9695