PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/13-17:12:50
G01     119.2          17.0               13.3 +/-    1.37      31.5 +/-    1.37  0.080 / 0.050
G07     88.0           61.8               13.0 +/-    0.99      14.5 +/-    0.99  0.110 / 0.110
G08     45.3           32.3               10.2 +/-    1.37      17.1 +/-    1.37  0.030 / 0.040
G09     177.8          28.3               13.0 +/-    1.24      23.5 +/-    1.24  0.040 / 0.030
G11     106.6          40.3               14.2 +/-    0.71      20.5 +/-    0.71  0.040 / 0.080
G13     317.7          19.6               11.1 +/-    1.70      24.6 +/-    1.70  0.050 / 0.080
G17     200.9          23.3               12.3 +/-    2.80      25.0 +/-    2.80  0.080 / 0.300
G18     93.3           20.4               12.6 +/-    0.95      27.6 +/-    0.95  0.230 / 0.280
G28     284.1          53.7               13.6 +/-    2.83      16.4 +/-    2.83  0.080 / 0.150
G30     350.5          69.8               13.1 +/-    0.96      13.8 +/-    0.96  0.080 / 0.120