condition mean min max ZT0-3 41.5026 36.2158 46.7894 ZT4-7 64.97015 64.97015 64.97015 ZT8-11 130.253 130.253 130.253 ZT12-15 0 0 0 ZT16-19 113.0398 113.0398 113.0398 ZT20-23 92.81435 92.81435 92.81435