condition mean min max ZT0-3 742.230365 742.230365 742.230365 ZT4-7 567.713164 567.713164 567.713164 ZT8-11 645.1839955 645.1839955 645.1839955 ZT12-15 747.5179 747.5179 747.5179 ZT16-19 840.1259985 840.1259985 840.1259985 ZT20-23 802.8079290000001 802.8079290000001 802.8079290000001