condition mean min max ZT0-3 10.943335000000001 9.38672 12.49995 ZT4-7 9.638359999999999 9.638359999999999 9.638359999999999 ZT8-11 5.843495 5.843495 5.843495 ZT12-15 0 0 0 ZT16-19 11.06939 11.06939 11.06939 ZT20-23 5.495385 5.495385 5.495385