condition mean min max ZT0-3 1202.5 1202.5 1202.5 ZT4-7 1195.8 1195.8 1195.8 ZT8-11 1159.8000000000002 1159.8000000000002 1159.8000000000002 ZT12-15 1236.35 1236.35 1236.35 ZT16-19 1348.85 1348.85 1348.85 ZT20-23 1227.6 1227.6 1227.6