PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/19-20:57:50
G01     119.6          17.0               12.3 +/-    1.79      29.1 +/-    1.79  0.030 / 0.030
G07     86.2           62.9               12.1 +/-    0.67      13.4 +/-    0.67  0.030 / 0.030
G08     44.8           30.9                9.6 +/-    1.13      16.6 +/-    1.13  0.110 / 0.080
G09     177.5          27.9               14.0 +/-    1.28      25.6 +/-    1.28  0.080 / 0.070
G11     106.0          40.1               12.6 +/-    1.34      18.3 +/-    1.34  0.080 / 0.110
G13     317.9          19.3               11.4 +/-    1.28      25.6 +/-    1.28  0.080 / 0.120
G17     200.4          24.9               14.1 +/-    3.45      27.6 +/-    3.45  0.030 / 0.030
G18     92.1           20.2               11.4 +/-    1.39      24.9 +/-    1.39  0.040 / 0.030
G28     285.2          54.4               12.2 +/-    2.23      14.7 +/-    2.23  0.090 / 0.290
G30     345.8          68.3               12.4 +/-    0.59      13.3 +/-    0.59  0.190 / 0.260