method        sample  d13C   d15N   molar_C_to_N  
Raw           Raw1    -13.0  16.5   3.0           
Raw           Raw2    -13.1  16.7   2.9           
Raw           Raw3    -12.7  16.6   2.9           
Raw           Raw4    -12.7  16.5   2.9           
Raw           Raw5    -12.6  16.6   2.9           
Raw           Raw26   -12.8  16.7   2.9           
Raw           Raw27   -13.0  16.6   3.0           
Raw           Raw28   -12.9  16.6   2.9           
Raw           Raw29   -13.0  16.6   2.9           
Raw           Raw30   -13.0  16.6   3.0