condition mean min max ZT0-3 0.60658280625 0.582503404 0.6306622085 ZT4-7 0.62318952825 0.5252337425 0.7211453139999999 ZT8-11 0.67812312925 0.5999118859999999 0.7563343725 ZT12-15 1.1278232335 0.6547425950000001 1.600903872 ZT16-19 1.74832178325 1.5440041409999998 1.9526394255000001 ZT20-23 4.7641427005 3.4064992485 6.1217861525