condition mean min max ZT0-3 70.95 70.95 70.95 ZT4-7 67.1 67.1 67.1 ZT8-11 42.150000000000006 42.150000000000006 42.150000000000006 ZT12-15 64.0 64.0 64.0 ZT16-19 120.45 120.45 120.45 ZT20-23 117.6 117.6 117.6