condition mean min max ZT0-3 148.49155102499998 137.5181179 159.46498415 ZT4-7 60.993802635 46.17456136 75.81304391 ZT8-11 47.6498553475 39.174306955 56.12540374 ZT12-15 54.3567711775 52.57510375 56.138438605000005 ZT16-19 61.627718327500006 57.09380298 66.161633675 ZT20-23 77.9921409225 73.406716405 82.57756544