PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/09-07:28:10
G02     28.4           60.0                2.5 +/-    0.42       2.8 +/-    0.42  0.030 / 0.030
G05     148.3          55.5                6.4 +/-    0.59       7.6 +/-    0.59  0.020 / 0.030
G06     49.0           24.5                1.7 +/-    0.48       3.4 +/-    0.48  0.040 / 0.050
G12     223.1          76.2                3.4 +/-    1.09       3.5 +/-    1.09  0.040 / 0.040
G19     94.0           14.2                5.3 +/-    1.20      13.4 +/-    1.20  0.120 / 0.530
G20     199.9          14.4                3.1 +/-    2.58       7.9 +/-    2.58  0.180 / 0.410
G25     307.0          47.1                4.1 +/-    0.96       5.4 +/-    0.96  0.050 / 0.080
G29     302.5          23.8                2.1 +/-    1.21       4.2 +/-    1.21  0.050 / 0.070