PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/02-16:28:10
G01     127.5          11.3               -0.5 +/-   46.50      -1.4 +/-   46.50  0.040 / 0.060
G07     49.9           69.8               12.1 +/-    0.29      12.8 +/-    0.29  0.050 / 0.050
G08     51.8           41.5               10.2 +/-    0.58      14.5 +/-    0.58  0.030 / 0.040
G09     178.0          36.4               13.5 +/-    1.88      20.9 +/-    1.88  0.040 / 0.040
G11     119.6          34.8               13.0 +/-    0.85      20.7 +/-    0.85  0.170 / 0.250
G13     321.3          11.1               -3.7 +/-   21.88     -10.2 +/-   21.88  0.100 / 0.270
G17     200.7          12.4               14.6 +/-    2.77      38.7 +/-    2.77  0.030 / 0.040
G18     104.6          16.3               12.6 +/-    2.33      30.4 +/-    2.33  0.030 / 0.030
G28     275.6          52.7               12.3 +/-    0.81      15.1 +/-    0.81  0.060 / 0.090
G30     332.8          60.4               10.8 +/-    0.98      12.2 +/-    0.98  0.060 / 0.080