Subsample  MIMS_at_pcnt  stdev_MIMS_at_pcnt  IRMS_15N_at_pcnt  stdev_IRMS_15N_at_pcnt  IRMS_at_pcnt_no_furnace  stdev_IRMS_at_pcnt_no_furnace  
1          0.392         0.134689            0.4289            0.022                   0.391                    0.0046                         
2          2.3           0.327               2.5               0.19                    2.4                      0.16                           
3          2.9           0.0093              3                 0.013                   2.9                      0.011                          
4          2.8           0.0055              2.9               0.003                   2.8                      0.0073                         
5          5.1           0.0857              5.1               0.054                   5                        0.042                          
6          4.8           0.00854             4.8               0.049                   4.7                      0.037                          
7          5             0.0282              5                 0.03                    4.8                      0.022                          
8          9.6           0.077               9.8               0.077                   9.5                      0.049                          
9          9.6           0.033               9.7               0.064                   9.4                      0.059                          
10         9.7           0.0154              9.9               0.066                   9.6                      0.058