condition mean min max ZT0-3 21.601075 20.8513 22.35085 ZT4-7 14.802399999999999 14.802399999999999 14.802399999999999 ZT8-11 17.177300000000002 17.177300000000002 17.177300000000002 ZT12-15 0 0 0 ZT16-19 32.28135 32.28135 32.28135 ZT20-23 23.16705 23.16705 23.16705