PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/20-06:13:10
G01     223.6          14.4                5.4 +/-    5.88      13.7 +/-    5.88  0.050 / 0.030
G03     280.5          68.0                5.7 +/-    0.85       6.1 +/-    0.85  0.040 / 0.040
G09     297.2          12.5                5.5 +/-    2.27      14.5 +/-    2.27  0.260 / 0.430
G14     89.6           22.7                5.1 +/-    1.90      10.5 +/-    1.90  0.270 / 0.340
G16     138.7          50.0                6.0 +/-    0.97       7.5 +/-    0.97  0.090 / 0.080
G22     211.5          67.7                5.3 +/-    0.57       5.7 +/-    0.57  0.080 / 0.090
G23     309.9          39.5                4.9 +/-    1.14       7.1 +/-    1.14  0.120 / 0.190
G26     86.2           53.5                5.1 +/-    1.45       6.1 +/-    1.45  0.110 / 0.200
G31     47.4           26.8                3.2 +/-    1.81       6.1 +/-    1.81  0.040 / 0.060