condition mean min max ZT0-3 17.46329 9.78327 24.34805 ZT4-7 25.25775 25.25775 25.25775 ZT8-11 39.0939 39.0939 39.0939 ZT12-15 45.452574999999996 36.02895 54.8762 ZT16-19 32.8642 32.8642 32.8642 ZT20-23 34.6725 34.6725 34.6725