PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/11-19:42:50
G02     10.5           70.0                7.4 +/-    1.12       7.8 +/-    1.12  0.050 / 0.090
G05     157.7          45.5               10.1 +/-    0.95      13.5 +/-    0.95  0.060 / 0.090
G06     45.1           29.6                7.5 +/-    1.03      13.2 +/-    1.03  0.040 / 0.040
G12     276.0          78.8                8.7 +/-    0.92       8.8 +/-    0.92  0.050 / 0.050
G19     85.7           18.8                8.1 +/-    1.85      18.5 +/-    1.85  0.180 / 0.380
G24     220.2          14.6                8.9 +/-   13.89      22.4 +/-   13.89  0.190 / 0.470
G25     313.5          38.8                7.6 +/-    0.93      11.3 +/-    0.93  0.090 / 0.130
G29     294.8          16.8                8.7 +/-    2.25      20.7 +/-    2.25  0.080 / 0.140