condition mean min max ZT0-3 1179.35 1179.35 1179.35 ZT4-7 1130.1 1130.1 1130.1 ZT8-11 1026.0 1026.0 1026.0 ZT12-15 1048.5 1048.5 1048.5 ZT16-19 1187.3 1187.3 1187.3 ZT20-23 1160.4 1160.4 1160.4