PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/23-20:43:10
G01     118.7          17.6               14.0 +/-    1.90      32.6 +/-    1.90  0.030 / 0.030
G07     88.6           62.1               12.9 +/-    0.69      14.4 +/-    0.69  0.040 / 0.040
G08     44.4           30.1                9.4 +/-    1.60      16.5 +/-    1.60  0.100 / 0.120
G09     177.4          26.9               14.5 +/-    1.81      27.1 +/-    1.81  0.110 / 0.130
G11     104.7          40.5               13.5 +/-    0.76      19.4 +/-    0.76  0.110 / 0.200
G13     317.4          20.2                9.4 +/-    1.93      20.6 +/-    1.93  0.110 / 0.150
G17     200.7          25.9               16.1 +/-    1.73      30.8 +/-    1.73  0.080 / 0.060
G18     91.1           20.6               12.3 +/-    1.62      26.6 +/-    1.62  0.080 / 0.080
G28     286.9          54.9               11.1 +/-    2.03      13.2 +/-    2.03  0.040 / 0.030
G30     348.0          69.3               11.7 +/-    0.88      12.4 +/-    0.88  0.040 / 0.030