sample           Glu_d15N_GCC  Glu_d15N_GCC_stdev  Phe_d15N_GCC  Phe_d15N_GCC_stdev  TP_GCC  Glu_d15N_HPLC  Glu_d15N_HPLC_stdev  Phe_d15N_HPLC  Phe_d15N_HPLC_stdev  TP_HPLC  d15N_EA  d15N_EA_stdev  
Cyanobacteria    8.01          0.19                7.97          0.58                0.56    8.10           0.20                 7.60           0.23                 0.62     nd       nd             
Mussel           14.72         0.40                7.55          0.59                1.50    15.72          0.41                 7.33           0.32                 1.66     nd       nd             
Coral            20.63         0.20                8.41          0.61                2.16    20.78          0.19                 8.26           0.53                 2.20     nd       nd             
White_Sea_Bass   29.43         0.24                8.98          0.33                3.24    29.32          0.16                 9.28           0.48                 3.19     nd       nd             
Harbor_Seal      25.86         0.11                11.88         0.43                2.39    25.70          0.60                 9.94           0.13                 2.63     nd       nd             
HPLC_Std_C       nd            nd                  nd            nd                  nd      nd             nd                   9.36           nd                   nd       nd       nd             
HPLC_Std_C       nd            nd                  nd            nd                  nd      nd             nd                   8.86           nd                   nd       nd       nd             
HPLC_Std_C       nd            nd                  nd            nd                  nd      nd             nd                   8.84           nd                   nd       nd       nd             
HPLC_Std_C       nd            nd                  nd            nd                  nd      -4.15          nd                   nd             nd                   nd       nd       nd             
HPLC_Std_C       nd            nd                  nd            nd                  nd      -3.94          nd                   nd             nd                   nd       nd       nd             
HPLC_Std_C       nd            nd                  nd            nd                  nd      -4.59          nd                   nd             nd                   nd       nd       nd             
Glu              nd            nd                  nd            nd                  nd      nd             nd                   nd             nd                   nd       -4.128   0.2324         
Phe              nd            nd                  nd            nd                  nd      nd             nd                   nd             nd                   nd       9.18     0.162