condition mean min max ZT0-3 4123.22439 4123.22439 4123.22439 ZT4-7 3927.234323 3927.234323 3927.234323 ZT8-11 3765.531846 3765.531846 3765.531846 ZT12-15 4304.6921365 4304.6921365 4304.6921365 ZT16-19 3904.0262435 3904.0262435 3904.0262435 ZT20-23 2908.2115775 2908.2115775 2908.2115775