PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/05-16:57:30
G07     324.6          54.6               18.1 +/-    0.99      21.6 +/-    0.99  0.040 / 0.090
G08     112.8          50.2               19.5 +/-    0.45      24.6 +/-    0.45  0.040 / 0.080
G09     206.1          79.2               17.7 +/-    0.39      18.0 +/-    0.39  0.030 / 0.030
G16     45.5           10.1               11.3 +/-    1.46      31.5 +/-    1.46  0.030 / 0.030
G23     151.8          42.1               18.4 +/-    1.08      25.8 +/-    1.08  0.040 / 0.060
G27     60.2           33.9               16.0 +/-    0.59      25.9 +/-    0.59  0.030 / 0.050
G28     233.4          25.5               20.4 +/-    2.67      39.3 +/-    2.67  0.060 / 0.160
G30     298.4          32.5               17.8 +/-    1.89      29.7 +/-    1.89  0.060 / 0.200