condition mean min max ZT0-3 57.45725 57.45725 57.45725 ZT4-7 41.939899999999994 41.939899999999994 41.939899999999994 ZT8-11 28.68945 28.68945 28.68945 ZT12-15 32.08185 32.08185 32.08185 ZT16-19 57.72165 57.72165 57.72165 ZT20-23 62.808949999999996 62.808949999999996 62.808949999999996