condition mean min max ZT0-3 1543.0500000000002 1543.0500000000002 1543.0500000000002 ZT4-7 1334.1 1334.1 1334.1 ZT8-11 761.05 761.05 761.05 ZT12-15 272.85 272.85 272.85 ZT16-19 194.39999999999998 194.39999999999998 194.39999999999998 ZT20-23 606.4 606.4 606.4