condition mean min max ZT0-3 1044.266053 1044.266053 1044.266053 ZT4-7 687.2965525 687.2965525 687.2965525 ZT8-11 450.290616 450.290616 450.290616 ZT12-15 551.6642525 551.6642525 551.6642525 ZT16-19 417.0964105 417.0964105 417.0964105 ZT20-23 345.82155150000006 345.82155150000006 345.82155150000006