condition mean min max ZT0-3 1627.95 1627.95 1627.95 ZT4-7 2192.7 2192.7 2192.7 ZT8-11 2679.8 2679.8 2679.8 ZT12-15 1669.95 1669.95 1669.95 ZT16-19 1505.0500000000002 1505.0500000000002 1505.0500000000002 ZT20-23 3912.95 3912.95 3912.95