PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/09-15:43:10
G07     335.8          59.4                9.5 +/-    0.69      10.8 +/-    0.69  0.090 / 0.210
G08     107.1          50.0               10.2 +/-    0.67      12.9 +/-    0.67  0.090 / 0.170
G09     209.6          79.5                9.7 +/-    1.27       9.8 +/-    1.27  0.210 / 0.420
G11     147.9          11.0                3.1 +/-   21.05       8.3 +/-   21.05  0.280 / 0.520
G16     45.1           13.2                6.7 +/-    1.25      17.4 +/-    1.25  0.050 / 0.080
G23     153.4          46.3               10.9 +/-    0.70      14.4 +/-    0.70  0.050 / 0.080
G27     61.7           34.9                7.7 +/-    0.45      12.2 +/-    0.45  0.040 / 0.060
G28     232.4          21.0                9.9 +/-    1.42      21.2 +/-    1.42  0.040 / 0.080
G30     299.3          34.0                8.8 +/-    1.77      14.3 +/-    1.77  0.070 / 0.270