PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/13-04:42:40
G10     264.3          37.6                8.1 +/-    1.25      12.2 +/-    1.25  0.130 / 0.390
G13     43.0           19.6                4.9 +/-    1.65      10.9 +/-    1.65  0.140 / 0.340
G15     61.2           49.6                6.5 +/-    0.54       8.2 +/-    0.54  0.040 / 0.060
G16     284.7          12.8                7.4 +/-    1.71      19.5 +/-    1.71  0.050 / 0.040
G20     292.8          59.1                7.7 +/-    0.77       8.8 +/-    0.77  0.080 / 0.230
G21     359.6          70.4                7.7 +/-    0.91       8.1 +/-    0.91  0.080 / 0.250
G24     122.3          12.7                6.0 +/-    1.30      15.9 +/-    1.30  0.070 / 0.100
G27     320.4          15.4                4.8 +/-    1.74      11.7 +/-    1.74  0.060 / 0.080
G29     165.3          31.2                8.8 +/-    1.71      15.0 +/-    1.71  0.090 / 0.350