PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/13-04:27:40
G05     49.4           14.9                2.9 +/-    2.47       7.2 +/-    2.47  0.100 / 0.290
G10     236.7          12.8                7.5 +/-    2.26      19.6 +/-    2.26  0.100 / 0.280
G13     75.0           36.5                6.7 +/-    0.76      10.4 +/-    0.76  0.110 / 0.290
G15     122.7          52.8                7.7 +/-    1.01       9.4 +/-    1.01  0.120 / 0.280
G16     312.9          13.1                5.7 +/-    2.65      14.8 +/-    2.65  0.120 / 0.390
G20     260.5          59.7                8.5 +/-    0.52       9.7 +/-    0.52  0.180 / 0.430
G21     313.5          47.2                5.8 +/-    1.10       7.6 +/-    1.10  0.050 / 0.070
G26     285.2          20.7                6.9 +/-    2.11      14.9 +/-    2.11  0.060 / 0.070
G29     156.8          72.1                9.5 +/-    1.45       9.9 +/-    1.45  0.030 / 0.030