PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/09-07:27:50
G01     319.9          15.7               -1.3 +/-   19.87      -3.1 +/-   19.87  0.210 / 0.310
G08     261.3          14.4                5.5 +/-    2.22      13.9 +/-    2.22  0.200 / 0.360
G10     75.7           54.6                2.2 +/-    0.44       2.6 +/-    0.44  0.190 / 0.390
G11     305.8          21.4                2.3 +/-    2.79       4.9 +/-    2.79  0.170 / 0.350
G14     280.5          67.2                3.1 +/-    0.77       3.3 +/-    0.77  0.040 / 0.070
G18     307.3          37.9                2.7 +/-    1.45       4.0 +/-    1.45  0.050 / 0.060
G20     105.4          24.4                3.7 +/-    0.86       7.4 +/-    0.86  0.110 / 0.260
G27     225.6          10.3                4.5 +/-    3.93      12.6 +/-    3.93  0.120 / 0.280
G31     174.6          41.2                4.5 +/-    0.70       6.5 +/-    0.70  0.080 / 0.280
G32     6.9            68.2                3.3 +/-    0.65       3.5 +/-    0.65  0.080 / 0.290