condition mean min max ZT0-3 135.6635 135.6635 135.6635 ZT4-7 95.29865000000001 95.29865000000001 95.29865000000001 ZT8-11 66.20025000000001 66.20025000000001 66.20025000000001 ZT12-15 53.330799999999996 53.330799999999996 53.330799999999996 ZT16-19 77.32235 77.32235 77.32235 ZT20-23 92.95224999999999 92.95224999999999 92.95224999999999