condition mean min max ZT0-3 1153.354902 1153.354902 1153.354902 ZT4-7 1042.47698 1042.47698 1042.47698 ZT8-11 1184.1235000000001 1184.1235000000001 1184.1235000000001 ZT12-15 1183.5714345 1183.5714345 1183.5714345 ZT16-19 1125.9057189999999 1125.9057189999999 1125.9057189999999 ZT20-23 908.7426599999999 908.7426599999999 908.7426599999999