PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/27-13:57:50
G05     49.0           17.2                2.1 +/-    1.74       5.0 +/-    1.74  0.100 / 0.130
G10     237.4          16.1                5.3 +/-    1.67      12.9 +/-    1.67  0.090 / 0.130
G13     71.6           34.8                5.6 +/-    1.05       8.9 +/-    1.05  0.130 / 0.300
G15     115.0          54.0                6.5 +/-    0.61       7.8 +/-    0.61  0.110 / 0.290
G16     311.3          13.7                2.9 +/-    1.64       7.4 +/-    1.64  0.030 / 0.030
G20     251.9          41.7                7.6 +/-    2.32      10.8 +/-    2.32  0.040 / 0.030
G21     316.6          48.7                4.6 +/-    0.87       5.9 +/-    0.87  0.060 / 0.080
G26     285.6          19.7                2.6 +/-    2.76       5.7 +/-    2.76  0.040 / 0.060
G29     155.3          71.1                6.7 +/-    1.03       7.1 +/-    1.03  0.100 / 0.200