condition mean min max ZT0-3 3232.05 3232.05 3232.05 ZT4-7 4235.0 4235.0 4235.0 ZT8-11 3601.3 3601.3 3601.3 ZT12-15 3586.4500000000003 3586.4500000000003 3586.4500000000003 ZT16-19 3308.1000000000004 3308.1000000000004 3308.1000000000004 ZT20-23 2940.7 2940.7 2940.7