condition mean min max ZT0-3 149.96147 149.96147 149.96147 ZT4-7 150.97824350000002 150.97824350000002 150.97824350000002 ZT8-11 171.86042 171.86042 171.86042 ZT12-15 142.8194235 142.8194235 142.8194235 ZT16-19 195.5150435 195.5150435 195.5150435 ZT20-23 171.806981 171.806981 171.806981