PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/18-17:28:10
G03     213.7          62.0               14.5 +/-    1.03      16.2 +/-    1.03  0.200 / 0.380
G09     306.7          22.1               11.8 +/-    1.45      24.6 +/-    1.45  0.170 / 0.380
G14     104.2          12.2               12.6 +/-    1.79      33.5 +/-    1.79  0.200 / 0.270
G16     111.9          63.0               14.9 +/-    0.48      16.5 +/-    0.48  0.060 / 0.200
G22     188.1          46.5               15.5 +/-    1.25      20.4 +/-    1.25  0.060 / 0.060
G23     327.2          56.7               13.5 +/-    0.39      15.8 +/-    0.39  0.050 / 0.050
G31     56.1           13.6                9.1 +/-    3.47      23.5 +/-    3.47  0.030 / 0.040