PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/11-19:57:50
G01     128.8          10.3                0.2 +/-   48.45       0.5 +/-   48.45  0.040 / 0.060
G07     44.2           69.9               14.7 +/-    0.58      15.5 +/-    0.58  0.050 / 0.080
G08     55.0           45.2               12.0 +/-    0.37      16.1 +/-    0.37  0.250 / 0.440
G09     179.1          39.2               15.9 +/-    1.17      23.5 +/-    1.17  0.190 / 0.380
G11     122.9          33.5               16.0 +/-    1.15      26.0 +/-    1.15  0.030 / 0.040
G18     106.4          15.4               15.3 +/-    1.81      37.7 +/-    1.81  0.030 / 0.030
G28     273.4          52.0               13.4 +/-    2.67      16.5 +/-    2.67  0.030 / 0.030
G30     333.3          60.4               12.8 +/-    0.40      14.5 +/-    0.40  0.040 / 0.050