PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/20-18:43:00
G07     316.7          52.5               12.3 +/-    0.94      15.0 +/-    0.94  0.050 / 0.060
G08     121.4          43.6               12.9 +/-    0.76      17.7 +/-    0.76  0.050 / 0.050
G09     289.6          81.0               12.2 +/-    0.49      12.4 +/-    0.49  0.040 / 0.030
G16     42.3           25.7               10.8 +/-    1.89      20.7 +/-    1.89  0.040 / 0.030
G23     147.6          60.8               12.8 +/-    0.36      14.4 +/-    0.36  0.060 / 0.070
G27     76.9           37.9               12.7 +/-    1.58      19.1 +/-    1.58  0.050 / 0.050
G28     225.5          12.1                2.5 +/-   23.10       6.6 +/-   23.10  0.190 / 0.520
G30     289.0          25.0               12.0 +/-    1.76      23.4 +/-    1.76  0.310 / 0.470