condition mean min max ZT0-3 53.712374999999994 52.463499999999996 54.96125 ZT4-7 33.443799999999996 33.443799999999996 33.443799999999996 ZT8-11 31.4569 31.4569 31.4569 ZT12-15 0 0 0 ZT16-19 46.94665 46.94665 46.94665 ZT20-23 48.87375 48.87375 48.87375