PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/30-01:27:50
G08     305.1          19.9                6.2 +/-    1.43      13.6 +/-    1.43  0.060 / 0.070
G10     352.7          62.2                8.4 +/-    0.73       9.4 +/-    0.73  0.060 / 0.080
G14     222.7          37.8               13.4 +/-    1.54      20.2 +/-    1.54  0.040 / 0.060
G20     52.3           56.7               10.0 +/-    1.15      11.8 +/-    1.15  0.050 / 0.060
G21     141.8          49.6               11.5 +/-    0.80      14.6 +/-    0.80  0.080 / 0.130
G24     65.1           28.9                8.9 +/-    1.29      15.9 +/-    1.29  0.090 / 0.130
G27     264.7          35.6               12.7 +/-    2.07      19.9 +/-    2.07  0.060 / 0.050
G32     231.4          59.5               10.3 +/-    1.55      11.8 +/-    1.55  0.050 / 0.040