condition mean min max ZT0-3 1219.5 1219.5 1219.5 ZT4-7 1119.9 1119.9 1119.9 ZT8-11 1077.4 1077.4 1077.4 ZT12-15 1134.7 1134.7 1134.7 ZT16-19 1114.45 1114.45 1114.45 ZT20-23 1195.5 1195.5 1195.5