condition mean min max ZT0-3 45.377433333333336 41.458 48.703050000000005 ZT4-7 30.50685 30.50685 30.50685 ZT8-11 36.1151 36.1151 36.1151 ZT12-15 47.701625 37.9446 57.45865 ZT16-19 41.2434 41.2434 41.2434 ZT20-23 51.7757 51.7757 51.7757