condition mean min max ZT0-3 759.65 759.65 759.65 ZT4-7 652.7 652.7 652.7 ZT8-11 562.4 562.4 562.4 ZT12-15 686.5999999999999 686.5999999999999 686.5999999999999 ZT16-19 860.95 860.95 860.95 ZT20-23 968.35 968.35 968.35