PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/12-13:27:40
G03     188.6          15.6                7.0 +/-    2.59      17.2 +/-    2.59  0.120 / 0.440
G07     296.1          40.6                6.8 +/-    0.74       9.8 +/-    0.74  0.120 / 0.370
G08     138.2          32.7                9.2 +/-    1.14      15.3 +/-    1.14  0.040 / 0.070
G09     318.4          69.9                5.4 +/-    0.98       5.7 +/-    0.98  0.040 / 0.080
G16     41.8           31.1                4.9 +/-    0.47       8.4 +/-    0.47  0.050 / 0.090
G23     132.1          70.6                7.8 +/-    0.90       8.2 +/-    0.90  0.050 / 0.080
G27     92.0           35.9                7.0 +/-    0.38      11.0 +/-    0.38  0.030 / 0.050
G30     278.3          16.2                6.8 +/-    2.68      16.4 +/-    2.68  0.030 / 0.040