condition mean min max ZT0-3 45.19835 33.00855 57.388149999999996 ZT4-7 6.08445 6.08445 6.08445 ZT8-11 0.890884 0.890884 0.890884 ZT12-15 0 0 0 ZT16-19 5.0084800000000005 5.0084800000000005 5.0084800000000005 ZT20-23 22.241349999999997 22.241349999999997 22.241349999999997