condition mean min max ZT0-3 148.1 148.1 148.1 ZT4-7 30.7 30.7 30.7 ZT8-11 51.150000000000006 51.150000000000006 51.150000000000006 ZT12-15 64.85 64.85 64.85 ZT16-19 122.0 122.0 122.0 ZT20-23 161.2 161.2 161.2