PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/07-10:58:10
G05     49.7           14.4                1.8 +/-    1.74       4.5 +/-    1.74  0.180 / 0.530
G10     237.3          13.1                3.5 +/-    1.37       9.1 +/-    1.37  0.130 / 0.350
G13     74.5           36.8                4.2 +/-    0.50       6.4 +/-    0.50  0.120 / 0.210
G15     118.5          53.3                7.3 +/-    0.93       8.8 +/-    0.93  0.100 / 0.210
G16     314.2          11.9                3.6 +/-    2.59       9.6 +/-    2.59  0.050 / 0.040
G20     20.5           69.6                5.2 +/-    0.87       5.5 +/-    0.87  0.040 / 0.040
G21     317.0          50.2                4.4 +/-    0.78       5.6 +/-    0.78  0.270 / 0.400
G25     199.1          9.7                 2.5 +/-    5.35       6.9 +/-    5.35  0.240 / 0.290
G26     286.1          20.2                4.9 +/-    1.26      10.6 +/-    1.26  0.020 / 0.030
G29     155.7          68.3                7.2 +/-    0.91       7.7 +/-    0.91  0.020 / 0.040