condition mean min max ZT0-3 0.20481522975 0.19876438600000002 0.21086607349999997 ZT4-7 0.4829518494999999 0.3571322545 0.6087714444999999 ZT8-11 0.5007165195000001 0.43166363750000003 0.5697694015 ZT12-15 2.500400297 1.8004100715000002 3.2003905225000002 ZT16-19 3.567789853 3.3395103535 3.7960693525 ZT20-23 4.606717675 4.2403241954999995 4.9731111545