condition mean min max ZT0-3 1157.4 1157.4 1157.4 ZT4-7 846.9 846.9 846.9 ZT8-11 749.2 749.2 749.2 ZT12-15 716.35 716.35 716.35 ZT16-19 777.8 777.8 777.8 ZT20-23 1146.3 1146.3 1146.3