condition mean min max ZT0-3 1735.76 1545.89 1996.04 ZT4-7 318.0345 318.0345 318.0345 ZT8-11 73.0224 73.0224 73.0224 ZT12-15 238.42149999999998 176.5345 300.3085 ZT16-19 152.631 152.631 152.631 ZT20-23 523.0345 523.0345 523.0345