condition mean min max ZT0-3 10.2817 10.2817 10.2817 ZT4-7 6.00777 6.00777 6.00777 ZT8-11 9.349129999999999 9.349129999999999 9.349129999999999 ZT12-15 8.19239 8.19239 8.19239 ZT16-19 13.9148 13.9148 13.9148 ZT20-23 12.1396 12.1396 12.1396