PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/30-09:27:40
G01     125.3          11.7                4.4 +/-    1.95      11.8 +/-    1.95  0.020 / 0.040
G07     60.3           68.3                4.4 +/-    0.32       4.7 +/-    0.32  0.030 / 0.040
G08     52.3           42.5                4.0 +/-    0.42       5.6 +/-    0.42  0.100 / 0.380
G09     177.6          35.8                6.6 +/-    1.04      10.3 +/-    1.04  0.100 / 0.340
G11     119.1          36.5                6.5 +/-    0.99      10.0 +/-    0.99  0.070 / 0.080
G13     320.5          13.2                1.6 +/-    2.01       4.2 +/-    2.01  0.070 / 0.090
G17     200.4          12.4                3.6 +/-    1.91       9.6 +/-    1.91  0.090 / 0.270
G18     102.6          16.8                4.7 +/-    1.32      11.2 +/-    1.32  0.080 / 0.320
G28     269.6          47.6                5.8 +/-    0.83       7.6 +/-    0.83  0.090 / 0.310
G30     331.9          60.4                3.8 +/-    0.67       4.2 +/-    0.67  0.100 / 0.350