condition mean min max ZT0-3 35102.899999999994 34481.35 35724.45 ZT4-7 28413.85 28413.85 28413.85 ZT8-11 24121.45 24121.45 24121.45 ZT12-15 0 0 0 ZT16-19 34536.2 34536.2 34536.2 ZT20-23 35685.45 35685.45 35685.45