Time_s   F1_Hz   F2_Hz   F3_Hz   F4_Hz
0.026650   1036.790752   1868.665234   2725.379192   4178.671519
0.032900   974.049368   2166.652594   2513.477738   3996.721480
0.039150   968.877629   1917.468277   2717.911715   3972.350504
0.045400   935.417099   1775.998855   2752.419306   3934.497286
0.051650   827.430974   1786.853761   2772.403169   3999.818948