PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/06-18:28:10
G01     124.2          14.1               16.7 +/-    1.48      42.4 +/-    1.48  0.070 / 0.080
G07     62.7           69.1               10.7 +/-    0.41      11.3 +/-    0.41  0.040 / 0.050
G08     49.3           39.3               10.0 +/-    1.15      14.8 +/-    1.15  0.030 / 0.030
G09     178.0          32.5               12.2 +/-    1.70      20.3 +/-    1.70  0.030 / 0.030
G11     115.7          37.1               13.6 +/-    0.58      20.7 +/-    0.58  0.030 / 0.030
G13     320.2          14.4                7.4 +/-    2.41      18.7 +/-    2.41  0.030 / 0.030
G17     201.7          15.3               14.3 +/-    2.44      35.3 +/-    2.44  0.200 / 0.290
G18     100.8          18.3               12.1 +/-    1.79      27.8 +/-    1.79  0.220 / 0.310
G28     282.7          55.0               10.1 +/-    2.85      12.1 +/-    2.85  0.080 / 0.100
G30     339.6          64.5               10.0 +/-    0.66      11.0 +/-    0.66  0.090 / 0.090