condition mean min max ZT0-3 222.34125 200.5595 244.123 ZT4-7 228.978 228.978 228.978 ZT8-11 203.8925 203.8925 203.8925 ZT12-15 0 0 0 ZT16-19 387.37350000000004 387.37350000000004 387.37350000000004 ZT20-23 293.81600000000003 293.81600000000003 293.81600000000003