condition mean min max ZT0-3 100.560275 92.99555000000001 108.125 ZT4-7 105.76849999999999 105.76849999999999 105.76849999999999 ZT8-11 106.57135 106.57135 106.57135 ZT12-15 0 0 0 ZT16-19 115.05449999999999 115.05449999999999 115.05449999999999 ZT20-23 96.1983 96.1983 96.1983