PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/09-13:28:00
G01     83.5           32.9                6.1 +/-    0.48      10.1 +/-    0.48  0.040 / 0.060
G07     130.3          40.5                8.1 +/-    1.34      11.7 +/-    1.34  0.030 / 0.030
G11     61.7           36.4                5.2 +/-    0.54       8.1 +/-    0.54  0.050 / 0.100
G13     287.6          37.5                6.0 +/-    1.39       9.1 +/-    1.39  0.050 / 0.120
G17     219.1          60.3                9.3 +/-    0.85      10.6 +/-    0.85  0.040 / 0.060
G18     57.7           22.1                3.5 +/-    0.70       7.4 +/-    0.70  0.040 / 0.050
G19     217.5          29.0                8.5 +/-    2.27      15.1 +/-    2.27  0.080 / 0.090
G28     359.6          61.2                4.7 +/-    0.73       5.3 +/-    0.73  0.080 / 0.110
G30     118.3          73.2                9.1 +/-    0.87       9.4 +/-    0.87  0.050 / 0.130