condition mean min max ZT0-3 231.529451 231.529451 231.529451 ZT4-7 163.155619 163.155619 163.155619 ZT8-11 146.426335 146.426335 146.426335 ZT12-15 128.6396395 128.6396395 128.6396395 ZT16-19 169.9977145 169.9977145 169.9977145 ZT20-23 217.228769 217.228769 217.228769