condition mean min max ZT0-3 94.75336666666666 66.9866 109.245 ZT4-7 36.07175 36.07175 36.07175 ZT8-11 14.6081 14.6081 14.6081 ZT12-15 36.150800000000004 31.701 40.6006 ZT16-19 39.6901 39.6901 39.6901 ZT20-23 67.8318 67.8318 67.8318