PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/22-09:58:00
G01     126.3          10.9                1.1 +/-   16.22       3.0 +/-   16.22  0.030 / 0.030
G07     57.4           68.4                5.0 +/-    0.78       5.3 +/-    0.78  0.030 / 0.030
G08     53.7           43.9                3.9 +/-    0.87       5.4 +/-    0.87  0.130 / 0.290
G09     178.0          37.3                6.2 +/-    1.23       9.4 +/-    1.23  0.150 / 0.290
G11     120.2          35.7                5.6 +/-    1.23       8.7 +/-    1.23  0.060 / 0.080
G13     320.9          12.1                2.7 +/-    3.77       7.2 +/-    3.77  0.070 / 0.080
G17     200.4          10.9               -5.7 +/-   14.23     -15.5 +/-   14.23  0.040 / 0.060
G18     103.7          16.2                4.2 +/-    3.44      10.2 +/-    3.44  0.040 / 0.050
G28     268.1          47.0                7.0 +/-    3.23       9.2 +/-    3.23  0.120 / 0.300
G30     331.0          59.6                3.9 +/-    0.54       4.5 +/-    0.54  0.130 / 0.290