condition mean min max ZT0-3 10.575019 10.575019 10.575019 ZT4-7 10.938456500000001 10.938456500000001 10.938456500000001 ZT8-11 10.575019 10.575019 10.575019 ZT12-15 11.079799 11.079799 11.079799 ZT16-19 9.430655999999999 9.430655999999999 9.430655999999999 ZT20-23 10.3081725 10.3081725 10.3081725