condition mean min max ZT0-3 716.771549 716.771549 716.771549 ZT4-7 3570.196472 3570.196472 3570.196472 ZT8-11 4299.531584 4299.531584 4299.531584 ZT12-15 3302.2117310000003 3302.2117310000003 3302.2117310000003 ZT16-19 2155.4962395000002 2155.4962395000002 2155.4962395000002 ZT20-23 1168.066531 1168.066531 1168.066531