condition mean min max ZT0-3 73.06165 73.06165 73.06165 ZT4-7 60.164550000000006 60.164550000000006 60.164550000000006 ZT8-11 55.7038 55.7038 55.7038 ZT12-15 57.96015 57.96015 57.96015 ZT16-19 62.9244 62.9244 62.9244 ZT20-23 61.5733 61.5733 61.5733