Time_s   F1_Hz   F2_Hz   F3_Hz   F4_Hz
1.920400   347.840660   1442.430205   2305.869397   3498.338530
1.926650   379.375429   1429.883163   2297.560369   3682.605332
1.932900   407.738012   1500.441156   2122.206489   3807.024662
1.939150   384.666879   1549.990438   1887.528310   3374.872627
1.945400   377.556709   1569.909672   1868.898135   3344.095679
1.951650   387.014600   1600.356731   1907.567969   3529.248508
1.957900   385.895857   1642.427471   1968.669867   3535.808302
1.964150   383.395690   1698.022103   2112.927417   3345.065499
1.970400   383.843898   1750.946540   2249.104191   3428.508588
1.976650   375.969572   1795.876574   2310.975336   3474.999849
1.982900   372.514365   1854.441668   2450.996146   3489.842865