PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/11-14:27:30
G07     32.1           68.2                9.5 +/-    0.95      10.1 +/-    0.95  0.060 / 0.120
G08     63.9           48.7                9.4 +/-    0.86      12.0 +/-    0.86  0.060 / 0.120
G09     180.7          50.6               11.7 +/-    0.86      14.6 +/-    0.86  0.080 / 0.130
G11     129.2          28.7               10.0 +/-    1.12      18.0 +/-    1.12  0.070 / 0.160
G18     112.8          10.5                4.5 +/-   25.25      12.4 +/-   25.25  0.030 / 0.030
G23     159.3          17.2                8.5 +/-    0.92      20.1 +/-    0.92  0.030 / 0.040
G27     40.7           17.8                7.7 +/-    1.46      17.9 +/-    1.46  0.220 / 0.400
G28     255.6          40.9               10.1 +/-    2.92      14.5 +/-    2.92  0.140 / 0.310
G30     323.7          53.9                8.4 +/-    0.85      10.2 +/-    0.85  0.090 / 0.160