condition mean min max ZT0-3 92.86118 92.86118 92.86118 ZT4-7 192.5556255 192.5556255 192.5556255 ZT8-11 233.5321035 233.5321035 233.5321035 ZT12-15 173.47522149999998 173.47522149999998 173.47522149999998 ZT16-19 105.920074 105.920074 105.920074 ZT20-23 76.3098895 76.3098895 76.3098895