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                4.1 +/-    2.11      11.1 +/-    2.11  0.030 / 0.030
G07     60.3           68.3                5.3 +/-    0.71       5.7 +/-    0.71  0.040 / 0.030
G08     52.3           42.5                4.0 +/-    1.38       5.6 +/-    1.38  0.080 / 0.090
G09     177.6          35.8                6.4 +/-    0.96      10.0 +/-    0.96  0.070 / 0.090
G11     119.1          36.5                6.3 +/-    0.59       9.8 +/-    0.59  0.090 / 0.370
G13     320.5          13.2                2.7 +/-    2.26       7.1 +/-    2.26  0.140 / 0.230
G17     200.4          12.4                0.8 +/-    6.78       2.2 +/-    6.78  0.040 / 0.070
G18     102.6          16.8                6.2 +/-    1.99      14.7 +/-    1.99  0.030 / 0.050
G28     269.6          47.6                5.8 +/-    2.12       7.5 +/-    2.12  0.100 / 0.230
G30     331.9          60.4                3.7 +/-    0.67       4.2 +/-    0.67  0.100 / 0.240