condition mean min max ZT0-3 1102.3 1102.3 1102.3 ZT4-7 1182.6 1182.6 1182.6 ZT8-11 1211.55 1211.55 1211.55 ZT12-15 1130.0500000000002 1130.0500000000002 1130.0500000000002 ZT16-19 1034.7 1034.7 1034.7 ZT20-23 1208.95 1208.95 1208.95