condition mean min max ZT0-3 65.9389 65.9389 65.9389 ZT4-7 61.636700000000005 61.636700000000005 61.636700000000005 ZT8-11 50.49265 50.49265 50.49265 ZT12-15 54.6098 54.6098 54.6098 ZT16-19 61.70805 61.70805 61.70805 ZT20-23 62.439949999999996 62.439949999999996 62.439949999999996