condition mean min max ZT0-3 25.4022 25.2228 25.5816 ZT4-7 21.974899999999998 21.974899999999998 21.974899999999998 ZT8-11 57.5399 57.5399 57.5399 ZT12-15 0 0 0 ZT16-19 32.30871 32.30871 32.30871 ZT20-23 36.0742 36.0742 36.0742