PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/10-09:42:30
G07     304.4          45.2                6.5 +/-    2.71       8.8 +/-    2.71  0.090 / 0.190
G08     128.1          39.4                7.4 +/-    1.29      10.8 +/-    1.29  0.080 / 0.140
G09     307.0          79.5                4.7 +/-    0.58       4.8 +/-    0.58  0.170 / 0.120
G16     41.9           23.7                3.5 +/-    1.98       6.9 +/-    1.98  0.120 / 0.170
G23     142.1          66.4                8.0 +/-    0.40       8.7 +/-    0.40  0.040 / 0.040
G27     82.7           37.2                7.2 +/-    2.07      11.0 +/-    2.07  0.030 / 0.040
G30     283.4          19.4                6.7 +/-    2.01      14.9 +/-    2.01  0.050 / 0.060