condition mean min max ZT0-3 786.2 786.2 786.2 ZT4-7 1135.7 1135.7 1135.7 ZT8-11 1179.3 1179.3 1179.3 ZT12-15 1083.55 1083.55 1083.55 ZT16-19 662.65 662.65 662.65 ZT20-23 546.0999999999999 546.0999999999999 546.0999999999999