condition mean min max ZT0-3 223.90014 223.90014 223.90014 ZT4-7 232.63669099999998 232.63669099999998 232.63669099999998 ZT8-11 262.3782995 262.3782995 262.3782995 ZT12-15 268.2563905 268.2563905 268.2563905 ZT16-19 367.8997565 367.8997565 367.8997565 ZT20-23 370.9476355 370.9476355 370.9476355