condition mean min max ZT0-3 1106.63825 1047.0515 1166.225 ZT4-7 491.0875 491.0875 491.0875 ZT8-11 159.0315 159.0315 159.0315 ZT12-15 0 0 0 ZT16-19 562.702 562.702 562.702 ZT20-23 744.663 744.663 744.663