PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/04-15:27:50
G01     98.3           29.5                9.0 +/-    0.79      16.0 +/-    0.79  0.030 / 0.030
G07     118.1          51.7               10.5 +/-    0.67      13.0 +/-    0.67  0.030 / 0.040
G08     41.8           13.4                6.0 +/-    1.62      15.4 +/-    1.62  0.070 / 0.140
G11     77.2           41.9               10.6 +/-    0.64      15.0 +/-    0.64  0.060 / 0.120
G13     302.1          33.3               11.3 +/-    0.99      18.5 +/-    0.99  0.040 / 0.060
G17     210.0          45.7               10.7 +/-    0.46      14.2 +/-    0.46  0.040 / 0.050
G18     71.1           24.6                9.1 +/-    0.88      17.9 +/-    0.88  0.030 / 0.060
G19     212.0          18.2                9.9 +/-    1.48      22.7 +/-    1.48  0.030 / 0.050
G28     334.7          61.8                9.6 +/-    0.63      10.7 +/-    0.63  0.040 / 0.080
G30     68.0           79.9               10.6 +/-    0.72      10.7 +/-    0.72  0.040 / 0.090