condition mean min max ZT0-3 124.30898 124.30898 124.30898 ZT4-7 172.1736725 172.1736725 172.1736725 ZT8-11 193.5284785 193.5284785 193.5284785 ZT12-15 173.3837675 173.3837675 173.3837675 ZT16-19 206.5699545 206.5699545 206.5699545 ZT20-23 179.24213350000002 179.24213350000002 179.24213350000002