condition mean min max ZT0-3 4515.9 4515.9 4515.9 ZT4-7 5285.1 5285.1 5285.1 ZT8-11 5647.0 5647.0 5647.0 ZT12-15 6784.75 6784.75 6784.75 ZT16-19 5943.45 5943.45 5943.45 ZT20-23 5099.7 5099.7 5099.7