condition mean min max ZT0-3 39.7308 39.7308 39.7308 ZT4-7 40.946600000000004 40.946600000000004 40.946600000000004 ZT8-11 26.314 26.314 26.314 ZT12-15 30.1203 30.1203 30.1203 ZT16-19 34.48865 34.48865 34.48865 ZT20-23 39.7083 39.7083 39.7083