PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/31-08:57:30
G07     26.2           68.6                4.3 +/-    0.87       4.6 +/-    0.87  0.030 / 0.050
G08     65.4           50.2                4.2 +/-    0.56       5.3 +/-    0.56  0.030 / 0.040
G09     179.0          48.4                6.4 +/-    1.95       8.2 +/-    1.95  0.120 / 0.190
G11     130.3          29.1                6.4 +/-    0.64      11.3 +/-    0.64  0.140 / 0.240
G18     112.8          10.8               -0.1 +/-   22.29      -0.2 +/-   22.29  0.060 / 0.090
G23     159.4          16.5                5.6 +/-    2.64      13.3 +/-    2.64  0.050 / 0.120
G27     40.2           16.7                2.2 +/-    0.85       5.2 +/-    0.85  0.130 / 0.330
G28     255.4          40.1                5.2 +/-    1.23       7.6 +/-    1.23  0.110 / 0.350
G30     320.3          50.9                5.6 +/-    0.99       6.9 +/-    0.99  0.080 / 0.170