condition mean min max ZT0-3 0.9777499999999999 0.9220615 1.0334385 ZT4-7 0.917739 0.917739 0.917739 ZT8-11 1.2721550000000001 1.2721550000000001 1.2721550000000001 ZT12-15 0 0 0 ZT16-19 2.8447899999999997 2.8447899999999997 2.8447899999999997 ZT20-23 2.0414399999999997 2.0414399999999997 2.0414399999999997