condition mean min max ZT0-3 841.65 841.65 841.65 ZT4-7 1177.4 1177.4 1177.4 ZT8-11 1056.85 1056.85 1056.85 ZT12-15 1209.75 1209.75 1209.75 ZT16-19 901.3 901.3 901.3 ZT20-23 841.4 841.4 841.4