condition mean min max ZT0-3 24.4337 24.4337 24.4337 ZT4-7 24.15525 24.15525 24.15525 ZT8-11 19.1901 19.1901 19.1901 ZT12-15 17.440150000000003 17.440150000000003 17.440150000000003 ZT16-19 20.41705 20.41705 20.41705 ZT20-23 22.4706 22.4706 22.4706