condition mean min max ZT0-3 899.45 899.45 899.45 ZT4-7 1127.8 1127.8 1127.8 ZT8-11 1023.8499999999999 1023.8499999999999 1023.8499999999999 ZT12-15 1015.1 1015.1 1015.1 ZT16-19 934.1999999999999 934.1999999999999 934.1999999999999 ZT20-23 875.0 875.0 875.0