condition mean min max ZT0-3 3436.95 3436.95 3436.95 ZT4-7 4205.6 4205.6 4205.6 ZT8-11 4737.9 4737.9 4737.9 ZT12-15 4500.4 4500.4 4500.4 ZT16-19 4705.35 4705.35 4705.35 ZT20-23 4078.3 4078.3 4078.3