condition mean min max ZT0-3 11.517800000000001 11.517800000000001 11.517800000000001 ZT4-7 10.087395 10.087395 10.087395 ZT8-11 8.71712 8.71712 8.71712 ZT12-15 10.38825 10.38825 10.38825 ZT16-19 13.21655 13.21655 13.21655 ZT20-23 11.55385 11.55385 11.55385