condition mean min max ZT0-3 740.85 740.85 740.85 ZT4-7 1085.9 1085.9 1085.9 ZT8-11 980.55 980.55 980.55 ZT12-15 888.3 888.3 888.3 ZT16-19 743.3499999999999 743.3499999999999 743.3499999999999 ZT20-23 608.2 608.2 608.2