PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/12-19:13:10
G07     315.4          51.9               11.3 +/-    0.92      14.0 +/-    0.92  0.230 / 0.360
G08     122.1          43.1               14.4 +/-    0.62      20.0 +/-    0.62  0.060 / 0.090
G09     293.2          80.6                9.8 +/-    0.84       9.9 +/-    0.84  0.050 / 0.100
G16     42.2           26.6                9.3 +/-    2.12      17.6 +/-    2.12  0.080 / 0.160
G23     147.1          61.8               14.7 +/-    0.90      16.4 +/-    0.90  0.120 / 0.170
G27     78.1           38.0               11.7 +/-    0.51      17.6 +/-    0.51  0.040 / 0.060
G28     225.2          11.6               -1.9 +/-   28.38      -5.1 +/-   28.38  0.040 / 0.050
G30     288.3          24.3               12.8 +/-    1.03      25.5 +/-    1.03  0.060 / 0.060