PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/24-20:42:40
G01     117.5          18.5               12.0 +/-    0.93      27.5 +/-    0.93  0.040 / 0.030
G07     91.4           61.3               12.7 +/-    0.76      14.2 +/-    0.76  0.040 / 0.030
G08     43.9           28.9                9.0 +/-    1.73      16.1 +/-    1.73  0.110 / 0.270
G09     177.2          25.5               12.3 +/-    2.10      23.8 +/-    2.10  0.130 / 0.360
G11     102.8          40.9               12.5 +/-    0.82      17.9 +/-    0.82  0.060 / 0.070
G13     316.7          21.2                8.7 +/-    1.72      18.7 +/-    1.72  0.070 / 0.070
G17     201.0          27.3               13.6 +/-    1.66      25.3 +/-    1.66  0.110 / 0.120
G18     89.7           21.0               11.0 +/-    1.48      23.6 +/-    1.48  0.100 / 0.130
G28     289.2          55.4               11.5 +/-    2.20      13.6 +/-    2.20  0.040 / 0.030
G30     350.7          70.5               11.1 +/-    0.43      11.7 +/-    0.43  0.050 / 0.030