condition mean min max ZT0-3 1.9384267011666667 0.5314356035 4.478015 ZT4-7 0.05197 0.05197 0.05197 ZT8-11 13.00878 13.00878 13.00878 ZT12-15 6.9443169 3.6739138 10.21472 ZT16-19 9.250385 9.250385 9.250385 ZT20-23 8.430735 8.430735 8.430735