PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/07-11:12:50
G01     121.6          14.7                4.1 +/-    1.73      10.2 +/-    1.73  0.060 / 0.070
G07     75.1           66.2                4.8 +/-    0.61       5.2 +/-    0.61  0.050 / 0.080
G08     48.8           39.0                2.7 +/-    1.05       4.0 +/-    1.05  0.160 / 0.270
G09     177.6          31.2                5.7 +/-    1.96       9.7 +/-    1.96  0.160 / 0.220
G11     112.9          39.0                6.4 +/-    0.38       9.4 +/-    0.38  0.030 / 0.040
G13     319.0          17.1                0.7 +/-    1.59       1.6 +/-    1.59  0.050 / 0.050
G17     201.4          16.2                5.4 +/-    1.95      13.1 +/-    1.95  0.110 / 0.270
G18     97.8           19.0                4.0 +/-    0.95       9.0 +/-    0.95  0.100 / 0.260
G28     276.8          50.7                4.4 +/-    0.93       5.5 +/-    0.93  0.040 / 0.100
G30     339.6          65.3                2.5 +/-    0.96       2.7 +/-    0.96  0.050 / 0.090