condition mean min max ZT0-3 45.1269 43.890100000000004 46.363699999999994 ZT4-7 81.09819999999999 81.09819999999999 81.09819999999999 ZT8-11 42.90885 42.90885 42.90885 ZT12-15 0 0 0 ZT16-19 37.9363 37.9363 37.9363 ZT20-23 60.216750000000005 60.216750000000005 60.216750000000005