condition mean min max ZT0-3 44.78915 43.572 46.006299999999996 ZT4-7 39.7855 39.7855 39.7855 ZT8-11 96.81105 96.81105 96.81105 ZT12-15 0 0 0 ZT16-19 106.14394999999999 106.14394999999999 106.14394999999999 ZT20-23 73.63135 73.63135 73.63135