condition mean min max ZT0-3 47.420950000000005 47.420950000000005 47.420950000000005 ZT4-7 31.3878 31.3878 31.3878 ZT8-11 68.11930000000001 68.11930000000001 68.11930000000001 ZT12-15 92.4572 92.4572 92.4572 ZT16-19 105.7046 105.7046 105.7046 ZT20-23 70.80305000000001 70.80305000000001 70.80305000000001