humidity	yield
30      13.1	
30      12.3	
30      13.3	
40      17.1	
40      16.6	
40      17.4	
50      19.5	
50      21.1	
50      19.3	
60      18.7	
60      20.1	
60      18.2	
70      18.9	
70      17.3	
70      17.5