PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/04-15:12:30
G02     216.7          56.5                7.3 +/-    2.46       8.5 +/-    2.46  0.060 / 0.090
G06     55.3           71.8                7.7 +/-    1.22       8.0 +/-    1.22  0.070 / 0.090
G12     320.3          41.4                5.8 +/-    1.03       8.2 +/-    1.03  0.040 / 0.080
G17     58.7           30.4                6.6 +/-    0.98      11.4 +/-    0.98  0.040 / 0.080
G19     34.5           52.2                5.4 +/-    0.41       6.6 +/-    0.41  0.040 / 0.030
G24     262.7          42.0                5.6 +/-    1.37       7.9 +/-    1.37  0.040 / 0.030
G28     122.4          14.0                8.8 +/-    1.69      22.4 +/-    1.69  0.030 / 0.050