condition mean min max ZT0-3 136.53875 129.1285 143.949 ZT4-7 120.05295000000001 120.05295000000001 120.05295000000001 ZT8-11 317.05 317.05 317.05 ZT12-15 0 0 0 ZT16-19 362.87350000000004 362.87350000000004 362.87350000000004 ZT20-23 243.83350000000002 243.83350000000002 243.83350000000002