condition mean min max ZT0-3 60.858324999999994 58.81995 62.896699999999996 ZT4-7 44.4049 44.4049 44.4049 ZT8-11 48.3266 48.3266 48.3266 ZT12-15 0 0 0 ZT16-19 87.23685 87.23685 87.23685 ZT20-23 81.84885 81.84885 81.84885