condition mean min max ZT0-3 5935.849999999999 5935.849999999999 5935.849999999999 ZT4-7 24721.7 24721.7 24721.7 ZT8-11 24885.800000000003 24885.800000000003 24885.800000000003 ZT12-15 17096.4 17096.4 17096.4 ZT16-19 6529.85 6529.85 6529.85 ZT20-23 915.45 915.45 915.45