condition mean min max ZT0-3 1158.5 1158.5 1158.5 ZT4-7 1077.3 1077.3 1077.3 ZT8-11 1019.25 1019.25 1019.25 ZT12-15 972.95 972.95 972.95 ZT16-19 1125.95 1125.95 1125.95 ZT20-23 1225.35 1225.35 1225.35