PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/19-18:42:20
G07     314.3          51.5               10.8 +/-    1.02      13.4 +/-    1.02  0.030 / 0.060
G08     123.6          42.3               12.2 +/-    1.30      17.1 +/-    1.30  0.040 / 0.050
G09     298.4          79.6               12.2 +/-    0.60      12.4 +/-    0.60  0.030 / 0.030
G16     42.1           27.4                7.1 +/-    2.28      13.1 +/-    2.28  0.030 / 0.030
G23     146.2          62.8               12.1 +/-    0.45      13.4 +/-    0.45  0.080 / 0.150
G27     79.4           37.9               10.1 +/-    0.67      15.2 +/-    0.67  0.200 / 0.190
G30     287.5          23.8               10.3 +/-    1.40      20.8 +/-    1.40  0.050 / 0.060