condition mean min max ZT0-3 5640.2 5640.2 5640.2 ZT4-7 4920.2 4920.2 4920.2 ZT8-11 4951.1 4951.1 4951.1 ZT12-15 5504.15 5504.15 5504.15 ZT16-19 5934.75 5934.75 5934.75 ZT20-23 6217.049999999999 6217.049999999999 6217.049999999999