PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/04-16:12:50
G01     73.4           33.2               10.7 +/-    0.81      17.6 +/-    0.81  0.040 / 0.050
G07     136.1          33.2               12.0 +/-    1.45      19.7 +/-    1.45  0.030 / 0.040
G11     55.1           32.1                7.9 +/-    0.70      13.3 +/-    0.70  0.050 / 0.070
G13     277.2          37.8               12.1 +/-    1.32      18.2 +/-    1.32  0.050 / 0.090
G15     306.2          13.7                8.0 +/-    1.44      20.6 +/-    1.44  0.040 / 0.050
G17     229.5          66.3               12.3 +/-    1.27      13.3 +/-    1.27  0.030 / 0.050
G18     50.7           19.2                8.0 +/-    1.04      18.0 +/-    1.04  0.050 / 0.090
G19     222.5          37.3               13.1 +/-    1.85      19.9 +/-    1.85  0.060 / 0.090
G28     15.5           59.8               10.3 +/-    0.42      11.7 +/-    0.42  0.070 / 0.090
G30     133.0          64.5               11.3 +/-    0.85      12.4 +/-    0.85  0.070 / 0.150