condition mean min max ZT0-3 1.6760416666666664 0.0 5.028124999999999 ZT4-7 0.368439 0.368439 0.368439 ZT8-11 0.6778315 0.6778315 0.6778315 ZT12-15 0.49817275 0.3954035 0.600942 ZT16-19 0.090315 0.090315 0.090315 ZT20-23 0.1019245 0.1019245 0.1019245