condition mean min max ZT0-3 62.203199999999995 62.203199999999995 62.203199999999995 ZT4-7 49.0262 49.0262 49.0262 ZT8-11 42.00215 42.00215 42.00215 ZT12-15 54.934200000000004 54.934200000000004 54.934200000000004 ZT16-19 66.67484999999999 66.67484999999999 66.67484999999999 ZT20-23 69.31540000000001 69.31540000000001 69.31540000000001