condition mean min max ZT0-3 1703.75 1703.75 1703.75 ZT4-7 1474.8 1474.8 1474.8 ZT8-11 1426.9 1426.9 1426.9 ZT12-15 1534.9 1534.9 1534.9 ZT16-19 1700.3000000000002 1700.3000000000002 1700.3000000000002 ZT20-23 1834.6 1834.6 1834.6