condition mean min max ZT0-3 12.601768 12.601768 12.601768 ZT4-7 14.744247000000001 14.744247000000001 14.744247000000001 ZT8-11 11.158271500000001 11.158271500000001 11.158271500000001 ZT12-15 11.350564 11.350564 11.350564 ZT16-19 10.72907 10.72907 10.72907 ZT20-23 11.824678500000001 11.824678500000001 11.824678500000001