condition mean min max ZT0-3 0.9014962500000001 0.6819725 1.1210200000000001 ZT4-7 0.6071925 0.6071925 0.6071925 ZT8-11 0.9911255000000001 0.9911255000000001 0.9911255000000001 ZT12-15 0 0 0 ZT16-19 0.819445 0.819445 0.819445 ZT20-23 1.04837 1.04837 1.04837