PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/14-19:12:50
G01     118.9          17.4               12.8 +/-    1.93      29.9 +/-    1.93  0.040 / 0.030
G07     88.8           61.7               10.7 +/-    0.74      12.0 +/-    0.74  0.030 / 0.050
G08     44.8           30.9               10.0 +/-    1.11      17.2 +/-    1.11  0.080 / 0.100
G09     177.6          27.6               11.1 +/-    1.89      20.5 +/-    1.89  0.100 / 0.130
G11     105.5          40.4               11.6 +/-    0.47      16.8 +/-    0.47  0.070 / 0.060
G13     317.5          19.9               10.3 +/-    1.36      22.7 +/-    1.36  0.070 / 0.070
G17     200.8          24.9               13.0 +/-    2.80      25.5 +/-    2.80  0.030 / 0.030
G18     92.1           20.5               11.8 +/-    1.39      25.6 +/-    1.39  0.030 / 0.040
G28     285.7          54.4               11.0 +/-    2.18      13.2 +/-    2.18  0.180 / 0.320
G30     348.9          69.5               11.2 +/-    0.55      11.9 +/-    0.55  0.270 / 0.370