PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/09-21:42:40
G01     118.1          18.1               12.2 +/-    2.14      28.1 +/-    2.14  0.110 / 0.380
G07     89.5           62.1               10.8 +/-    0.25      12.1 +/-    0.25  0.110 / 0.330
G08     44.1           29.1                7.1 +/-    0.42      12.7 +/-    0.42  0.050 / 0.060
G09     177.1          25.9               12.6 +/-    1.46      24.2 +/-    1.46  0.030 / 0.070
G11     103.6          40.7               12.2 +/-    0.40      17.6 +/-    0.40  0.040 / 0.040
G13     317.0          20.7               10.4 +/-    2.71      22.5 +/-    2.71  0.030 / 0.040
G17     200.8          27.0               12.6 +/-    1.32      23.5 +/-    1.32  0.140 / 0.430
G18     90.0           20.8               11.3 +/-    0.93      24.5 +/-    0.93  0.100 / 0.410
G28     288.5          55.4               10.9 +/-    0.82      13.0 +/-    0.82  0.030 / 0.050
G30     348.4          69.6                9.8 +/-    0.89      10.4 +/-    0.89  0.030 / 0.040