condition mean min max ZT0-3 18.00215 18.00215 18.00215 ZT4-7 29.299750000000003 29.299750000000003 29.299750000000003 ZT8-11 9.43858 9.43858 9.43858 ZT12-15 6.145825 6.145825 6.145825 ZT16-19 8.891105 8.891105 8.891105 ZT20-23 12.211749999999999 12.211749999999999 12.211749999999999