PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/07-13:43:10
G03     189.2          17.2                7.7 +/-    2.28      18.2 +/-    2.28  0.070 / 0.150
G07     294.0          39.4                7.1 +/-    1.28      10.4 +/-    1.28  0.070 / 0.140
G08     140.0          30.9                9.5 +/-    1.08      16.2 +/-    1.08  0.040 / 0.090
G09     319.5          67.6                5.7 +/-    0.57       6.1 +/-    0.57  0.040 / 0.090
G16     41.9           33.1                6.2 +/-    0.68      10.3 +/-    0.68  0.030 / 0.040
G23     128.5          72.3               10.2 +/-    0.72      10.6 +/-    0.72  0.030 / 0.040
G27     94.5           35.3                7.2 +/-    0.57      11.4 +/-    0.57  0.120 / 0.260
G30     276.8          15.1                6.9 +/-    1.96      17.1 +/-    1.96  0.140 / 0.310