PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/07-21:27:50
G01     126.6          11.5               -9.6 +/-   37.39     -26.0 +/-   37.39  0.030 / 0.040
G07     64.9           67.0               13.3 +/-    0.40      14.3 +/-    0.40  0.030 / 0.040
G08     49.4           37.8               11.5 +/-    1.34      17.4 +/-    1.34  0.240 / 0.230
G09     178.4          36.6               13.8 +/-    1.10      21.3 +/-    1.10  0.240 / 0.340
G11     116.2          36.0               15.0 +/-    0.92      23.4 +/-    0.92  0.120 / 0.080
G13     320.8          12.4                1.6 +/-   21.73       4.2 +/-   21.73  0.090 / 0.070
G17     198.9          16.5               14.2 +/-    2.91      34.0 +/-    2.91  0.060 / 0.080
G18     100.3          16.6               12.8 +/-    1.75      30.5 +/-    1.75  0.060 / 0.080
G28     272.3          50.2               13.4 +/-    2.60      16.8 +/-    2.60  0.130 / 0.270
G30     333.2          60.9               11.8 +/-    0.66      13.3 +/-    0.66  0.110 / 0.260