condition mean min max ZT0-3 1146.645017 1146.645017 1146.645017 ZT4-7 1400.188456 1400.188456 1400.188456 ZT8-11 1338.4786095 1338.4786095 1338.4786095 ZT12-15 1244.7549795 1244.7549795 1244.7549795 ZT16-19 1054.428297 1054.428297 1054.428297 ZT20-23 696.1043520000001 696.1043520000001 696.1043520000001