condition mean min max ZT0-3 95.953919 95.953919 95.953919 ZT4-7 93.365374 93.365374 93.365374 ZT8-11 88.95195100000001 88.95195100000001 88.95195100000001 ZT12-15 82.637095 82.637095 82.637095 ZT16-19 76.395082 76.395082 76.395082 ZT20-23 117.57791850000001 117.57791850000001 117.57791850000001