condition mean min max ZT0-3 3.5589825 3.4783799999999996 3.6395850000000003 ZT4-7 3.650985 3.650985 3.650985 ZT8-11 5.028275000000001 5.028275000000001 5.028275000000001 ZT12-15 0 0 0 ZT16-19 4.299855 4.299855 4.299855 ZT20-23 3.9893349999999996 3.9893349999999996 3.9893349999999996