condition mean min max ZT0-3 33.52405 33.52405 33.52405 ZT4-7 145.851 145.851 145.851 ZT8-11 83.1311 83.1311 83.1311 ZT12-15 39.56365 39.56365 39.56365 ZT16-19 46.4677 46.4677 46.4677 ZT20-23 36.86525 36.86525 36.86525