condition mean min max ZT0-3 0.0263977585 0.017785881 0.035009636000000004 ZT4-7 0.010183856750000001 0.007761736 0.0126059775 ZT8-11 0.03403096175 0.0 0.0680619235 ZT12-15 0.0081144 0.0 0.0162288 ZT16-19 0.014566514500000002 0.009514368 0.019618661000000003 ZT20-23 0.07059377124999999 0.06696497 0.0742225725