condition mean min max ZT0-3 152.1465 152.1465 152.1465 ZT4-7 332.82849999999996 332.82849999999996 332.82849999999996 ZT8-11 282.9185 282.9185 282.9185 ZT12-15 141.79000000000002 141.79000000000002 141.79000000000002 ZT16-19 45.616200000000006 45.616200000000006 45.616200000000006 ZT20-23 46.48945 46.48945 46.48945