condition mean min max ZT0-3 12.3544 12.3544 12.3544 ZT4-7 11.94725 11.94725 11.94725 ZT8-11 11.3742 11.3742 11.3742 ZT12-15 10.8095 10.8095 10.8095 ZT16-19 17.1278 17.1278 17.1278 ZT20-23 14.87845 14.87845 14.87845