condition mean min max ZT0-3 287.65425 286.38 288.9285 ZT4-7 250.187 250.187 250.187 ZT8-11 305.7485 305.7485 305.7485 ZT12-15 0 0 0 ZT16-19 393.3185 393.3185 393.3185 ZT20-23 311.9805 311.9805 311.9805