condition mean min max ZT0-3 2225.001564 2225.001564 2225.001564 ZT4-7 3922.2850104999998 3922.2850104999998 3922.2850104999998 ZT8-11 1411.3868499999999 1411.3868499999999 1411.3868499999999 ZT12-15 1124.546802 1124.546802 1124.546802 ZT16-19 467.367786 467.367786 467.367786 ZT20-23 277.8352605 277.8352605 277.8352605