condition mean min max ZT0-3 0.73944718225 0.5309411405 0.947953224 ZT4-7 0.049771817999999995 0.045214881 0.05432875499999999 ZT8-11 7.5322427725 0.46364485749999995 14.6008406875 ZT12-15 29.679538909999998 21.87431469 37.48476313 ZT16-19 13.78422406675 10.2674077385 17.301040395 ZT20-23 2.69133393775 1.7642771954999998 3.61839068