condition mean min max ZT0-3 452.794 452.794 452.794 ZT4-7 400.1145 400.1145 400.1145 ZT8-11 431.2795 431.2795 431.2795 ZT12-15 319.639 319.639 319.639 ZT16-19 510.824 510.824 510.824 ZT20-23 444.16549999999995 444.16549999999995 444.16549999999995