condition mean min max ZT0-3 26.9399 26.9399 26.9399 ZT4-7 146.5385 146.5385 146.5385 ZT8-11 228.04250000000002 228.04250000000002 228.04250000000002 ZT12-15 128.8395 128.8395 128.8395 ZT16-19 124.53649999999999 124.53649999999999 124.53649999999999 ZT20-23 13.17145 13.17145 13.17145