condition mean min max ZT0-3 62.5069 61.821749999999994 63.19205 ZT4-7 25.417900000000003 25.417900000000003 25.417900000000003 ZT8-11 5.68945 5.68945 5.68945 ZT12-15 0 0 0 ZT16-19 10.37301 10.37301 10.37301 ZT20-23 33.90725 33.90725 33.90725