PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/06-07:58:00
G02     35.2           53.9                2.7 +/-    1.27       3.3 +/-    1.27  0.020 / 0.030
G05     137.6          62.1                4.7 +/-    0.42       5.3 +/-    0.42  0.020 / 0.030
G06     52.8           18.8                0.8 +/-    2.98       1.7 +/-    2.98  0.030 / 0.030
G12     204.0          69.3                4.9 +/-    0.59       5.2 +/-    0.59  0.030 / 0.030
G19     100.0          9.7                 5.7 +/-    2.59      16.1 +/-    2.59  0.130 / 0.210
G20     200.5          21.6                4.0 +/-    2.23       8.4 +/-    2.23  0.210 / 0.280
G25     298.3          52.6                4.0 +/-    2.18       4.9 +/-    2.18  0.220 / 0.310
G29     307.9          29.2                2.2 +/-    1.47       3.9 +/-    1.47  0.320 / 0.230