condition mean min max ZT0-3 910.4499999999999 910.4499999999999 910.4499999999999 ZT4-7 1056.1 1056.1 1056.1 ZT8-11 1205.85 1205.85 1205.85 ZT12-15 1205.0500000000002 1205.0500000000002 1205.0500000000002 ZT16-19 1269.5 1269.5 1269.5 ZT20-23 1258.25 1258.25 1258.25