PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/13-20:43:00
G10     250.9          27.2               12.1 +/-    1.48      22.5 +/-    1.48  0.040 / 0.050
G13     53.1           29.5                8.4 +/-    0.75      14.8 +/-    0.75  0.040 / 0.050
G15     95.8           60.2               10.9 +/-    0.68      12.3 +/-    0.68  0.060 / 0.190
G16     294.6          15.7                6.9 +/-    2.05      17.0 +/-    2.05  0.060 / 0.170
G20     270.2          51.0                9.5 +/-    1.02      11.9 +/-    1.02  0.080 / 0.130
G21     334.3          60.4                9.8 +/-    0.61      11.1 +/-    0.61  0.110 / 0.120
G26     267.2          15.4               10.9 +/-    1.38      26.9 +/-    1.38  0.030 / 0.070
G29     164.9          50.2               11.0 +/-    1.14      13.9 +/-    1.14  0.030 / 0.060