Sample_ID Time Mass_z_28 Mass_z_29 Mass_z_30 Mass_z_32 Mass_z_40 O2_Ar ratio_30_28 atom_pcnt_15N std 0.4333564814814815 8.301695e-06 5.335568e-08 4.030624e-09 4.042403e-06 2.20631e-07 0.0009970862 0.0004855182 0.37 nd 0.43421296296296297 8.293502e-06 5.331237e-08 4.011295e-09 4.038468e-06 2.204168e-07 0.0009932715 0.0004836672 0.37 nd 0.4345717592592593 8.287978e-06 5.329211e-08 3.998998e-09 4.035668e-06 2.202969e-07 0.0009909134 0.0004825058 0.37 std 0.6281828703703703 6.667888e-06 4.360693e-08 4.727216e-09 3.283181e-06 1.82191e-07 0.001439828 0.0007089525 0.40 nd 0.6294675925925927 6.661404e-06 4.357299e-08 4.677765e-09 3.280019e-06 1.820444e-07 0.00142614 0.0007022191 0.39 nd 0.6306365740740741 6.657302e-06 4.355123e-08 4.643226e-09 3.277783e-06 1.819483e-07 0.001416575 0.0006974636 0.39 nd 0.629429012345679 7.478294833333333e-06 4.844855166666667e-08 4.3481873333333335e-09 3.6595870000000004e-06 nd nd nd 0.38 7/12/18 0.5138194444444445 1.659951e-06 1.604687e-08 9.322115e-06 9.385458e-07 3.61856e-08 9.932509 5.615897 84.83 nd 0.5131018518518519 1.661562e-06 1.605624e-08 9.316339e-06 9.401998e-07 3.621173e-08 9.908893 5.606976 84.81 nd 0.5152430555555555 1.659318e-06 1.604068e-08 9.322125e-06 9.379484e-07 3.616499e-08 9.938847 5.618047 84.84 nd 0.5140547839506172 1.6602769999999998e-06 1.6047929999999997e-08 9.320193e-06 9.38898e-07 3.618744e-08 9.926749666666668 5.61364 84.83 6ml_7/1/18 0.5235532407407407 8.003711e-06 5.171291e-08 3.792731e-07 3.934267e-06 2.161186e-07 0.09640249 0.04738716 4.803131096703141 into 94 ml 0.5237268518518519 7.999575e-06 5.168452e-08 3.769958e-07 3.932537e-06 2.160256e-07 0.09586578 0.04712697 4.779613866752199 nd 0.5239583333333333 7.993779e-06 5.164291e-08 3.73997e-07 3.93031e-06 2.159092e-07 0.09515713 0.04678601 4.748765434691976 6ml_7/1/18 0.5264583333333334 7.956213e-06 5.143763e-08 3.873647e-07 3.916477e-06 2.151348e-07 0.09890642 0.04868707 4.920580829957817 into 94 ml 0.5264583333333334 7.956213e-06 5.143763e-08 3.873647e-07 3.916477e-06 2.151348e-07 0.09890642 0.04868707 4.920580829957817 nd 0.5266782407407408 7.956447e-06 5.142687e-08 3.859839e-07 3.916749e-06 2.151433e-07 0.09854702 0.0485121 4.904745187265663 12ml_7/1/18 0.5294444444444445 7.620547e-06 4.962768e-08 7.131607e-07 3.771636e-06 2.066641e-07 0.1890852 0.09358393 8.802875067608232 into 88 ml 0.529537037037037 7.619393e-06 4.962362e-08 7.131662e-07 3.771113e-06 2.066417e-07 0.1891129 0.09359882 8.804126870618648 nd 0.5298032407407408 7.615476e-06 4.961028e-08 7.130487e-07 3.769459e-06 2.065689e-07 0.1891647 0.09363154 8.806898453669934 12ml_7/1/18 0.5333333333333333 7.564452e-06 4.934008e-08 7.038155e-07 3.747327e-06 2.054586e-07 0.187818 0.09304251 8.758354286293462 into 88 ml 0.532349537037037 7.575932e-06 4.938001e-08 7.052485e-07 3.752672e-06 2.056891e-07 0.1879323 0.09309065 8.762177576452176 nd 0.5335069444444445 7.561875e-06 4.932144e-08 7.03458e-07 3.746123e-06 2.054201e-07 0.187783 0.09302694 8.757053287713061 24ml_7/1/18 0.536099537037037 7.004555e-06 4.633799e-08 1.349066e-06 3.504706e-06 1.909038e-07 0.3849299 0.1925984 16.336210648571274 into 76 ml 0.5365046296296296 6.996618e-06 4.62867e-08 1.352201e-06 3.50111e-06 1.90705e-07 0.3862207 0.1932649 16.382692477594414 nd 0.5366319444444444 6.99477e-06 4.627777e-08 1.352925e-06 3.500355e-06 1.906606e-07 0.3865106 0.1934195 16.39347568433916 24ml_7/1/18 0.5384606481481481 6.880012e-06 4.56231e-08 1.338419e-06 3.450713e-06 1.881078e-07 0.3878674 0.1945373 16.471704245014564 into 76 ml 0.538599537037037 6.902294e-06 4.575742e-08 1.342519e-06 3.461985e-06 1.886887e-07 0.3877887 0.1945033 16.469285475293024 nd 0.538912037037037 6.932341e-06 4.592859e-08 1.347346e-06 3.473127e-06 1.892752e-07 0.3879345 0.1943565 16.458966669634574