PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/12-08:57:50
G10     264.8          37.6                6.4 +/-    1.55       9.7 +/-    1.55  0.080 / 0.080
G13     42.8           19.4                2.2 +/-    0.84       5.0 +/-    0.84  0.080 / 0.090
G15     60.9           49.6                4.4 +/-    0.53       5.6 +/-    0.53  0.190 / 0.400
G16     286.9          12.1                5.3 +/-    1.44      14.1 +/-    1.44  0.200 / 0.490
G20     293.9          59.4                3.8 +/-    1.14       4.4 +/-    1.14  0.200 / 0.380
G21     8.7            71.8                5.0 +/-    0.72       5.2 +/-    0.72  0.140 / 0.350
G24     120.6          13.1                5.8 +/-    2.11      15.1 +/-    2.11  0.040 / 0.110
G27     320.5          15.2                0.8 +/-    3.58       1.9 +/-    3.58  0.040 / 0.100
G29     164.6          28.8                6.0 +/-    2.43      10.9 +/-    2.43  0.040 / 0.040