PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/28-11:57:40
G01     56.9           28.9                2.5 +/-    0.63       4.5 +/-    0.63  0.080 / 0.270
G07     142.5          18.4                4.0 +/-    2.47       9.1 +/-    2.47  0.070 / 0.210
G11     47.5           23.5               -3.4 +/-    1.07      -6.8 +/-    1.07  0.050 / 0.110
G13     258.9          35.4                5.4 +/-    0.82       8.5 +/-    0.82  0.050 / 0.080
G15     292.9          15.9                2.6 +/-    2.59       6.4 +/-    2.59  0.040 / 0.050
G17     257.0          74.9                6.6 +/-    0.73       6.9 +/-    0.73  0.040 / 0.060
G18     40.5           11.3                2.2 +/-    2.53       6.1 +/-    2.53  0.060 / 0.130
G19     234.1          54.3                7.0 +/-    0.88       8.5 +/-    0.88  0.060 / 0.140
G28     27.0           59.3                3.8 +/-    0.77       4.4 +/-    0.77  0.150 / 0.390
G30     145.3          51.3                6.1 +/-    1.45       7.6 +/-    1.45  0.140 / 0.450