condition mean min max ZT0-3 90.017723 90.017723 90.017723 ZT4-7 91.3652955 91.3652955 91.3652955 ZT8-11 102.9285455 102.9285455 102.9285455 ZT12-15 133.395264 133.395264 133.395264 ZT16-19 215.3107875 215.3107875 215.3107875 ZT20-23 138.9369845 138.9369845 138.9369845