PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/31-16:58:10
G01     119.6          17.6               13.2 +/-    1.24      30.8 +/-    1.24  0.050 / 0.090
G07     78.5           67.1               12.4 +/-    0.68      13.3 +/-    0.68  0.040 / 0.100
G08     45.7           33.5               11.0 +/-    1.05      18.0 +/-    1.05  0.020 / 0.030
G09     176.9          26.3               11.0 +/-    0.99      20.9 +/-    0.99  0.030 / 0.040
G11     108.3          39.7               12.3 +/-    0.69      18.0 +/-    0.69  0.030 / 0.030
G13     318.0          18.9               12.0 +/-    1.70      27.1 +/-    1.70  0.030 / 0.030
G17     202.3          21.8               13.1 +/-    2.15      27.5 +/-    2.15  0.120 / 0.200
G18     95.1           20.7               11.5 +/-    1.50      24.8 +/-    1.50  0.110 / 0.190
G28     292.0          57.2               12.1 +/-    1.40      14.1 +/-    1.40  0.100 / 0.220
G30     346.7          68.5               11.7 +/-    0.25      12.5 +/-    0.25  0.100 / 0.240