PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/03-17:12:40
G07     328.9          56.4                9.6 +/-    0.96      11.2 +/-    0.96  0.030 / 0.060
G08     108.0          51.7               11.6 +/-    0.70      14.3 +/-    0.70  0.030 / 0.060
G09     197.1          76.2               10.4 +/-    1.03      10.7 +/-    1.03  0.050 / 0.090
G11     148.3          11.4                9.4 +/-    3.99      25.5 +/-    3.99  0.040 / 0.080
G27     56.9           32.5                8.5 +/-    0.67      14.1 +/-    0.67  0.030 / 0.050
G28     235.7          28.1               11.9 +/-    2.11      21.8 +/-    2.11  0.030 / 0.060
G30     300.9          34.6               10.3 +/-    1.41      16.4 +/-    1.41  0.240 / 0.440