condition mean min max ZT0-3 51.197061830833334 50.08290340666667 52.311220254999995 ZT4-7 58.151490405000004 56.62465952 59.67832129 ZT8-11 60.22913035 60.10127111 60.35698959 ZT12-15 66.91651849 66.38446456333334 67.44857241666666 ZT16-19 53.99051176333333 52.04472569666667 55.93629783 ZT20-23 47.412948146666665 44.47554638 50.35034991333333