PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/16-12:42:50
G01     121.8          14.7                6.1 +/-    1.90      15.2 +/-    1.90  0.080 / 0.110
G07     76.4           65.6                6.7 +/-    0.54       7.3 +/-    0.54  0.070 / 0.090
G08     48.3           37.9                5.8 +/-    0.97       8.7 +/-    0.97  0.050 / 0.120
G09     177.9          31.6                5.9 +/-    1.19      10.0 +/-    1.19  0.080 / 0.120
G11     112.4          38.9                8.6 +/-    0.74      12.7 +/-    0.74  0.190 / 0.380
G13     319.1          17.0                4.5 +/-    4.57      10.7 +/-    4.57  0.130 / 0.320
G17     201.0          17.2                5.3 +/-    2.07      12.4 +/-    2.07  0.130 / 0.260
G18     97.7           19.0                6.4 +/-    1.24      14.5 +/-    1.24  0.250 / 0.240
G28     277.2          51.0                6.5 +/-    2.78       8.1 +/-    2.78  0.030 / 0.030
G30     341.6          66.1                6.4 +/-    0.66       6.9 +/-    0.66  0.030 / 0.030