PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/07-18:57:40
G03     188.1          17.6               15.6 +/-    1.44      36.5 +/-    1.44  0.150 / 0.130
G07     295.7          42.7               13.8 +/-    4.12      19.3 +/-    4.12  0.160 / 0.190
G08     138.0          30.3               17.8 +/-    0.65      30.9 +/-    0.65  0.050 / 0.090
G09     320.0          64.5               14.1 +/-    0.96      15.5 +/-    0.96  0.050 / 0.080
G16     43.3           41.8               12.1 +/-    0.82      17.1 +/-    0.82  0.130 / 0.280
G23     120.2          79.0               15.0 +/-    1.05      15.3 +/-    1.05  0.110 / 0.180
G26     44.1           13.8               10.1 +/-    2.64      25.8 +/-    2.64  0.030 / 0.030
G27     99.9           34.6               15.2 +/-    0.78      24.4 +/-    0.78  0.030 / 0.030
G30     275.5          14.1               14.3 +/-    1.97      36.4 +/-    1.97  0.040 / 0.070