condition mean min max ZT0-3 188.30898 188.30898 188.30898 ZT4-7 140.868737 140.868737 140.868737 ZT8-11 118.891468 118.891468 118.891468 ZT12-15 148.232057 148.232057 148.232057 ZT16-19 149.176721 149.176721 149.176721 ZT20-23 144.7933975 144.7933975 144.7933975