condition mean min max ZT0-3 2058.25 2058.25 2058.25 ZT4-7 2349.3 2349.3 2349.3 ZT8-11 2768.05 2768.05 2768.05 ZT12-15 2835.8 2835.8 2835.8 ZT16-19 2815.8999999999996 2815.8999999999996 2815.8999999999996 ZT20-23 2617.8999999999996 2617.8999999999996 2617.8999999999996