PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/24-10:57:50
G10     262.5          35.0                4.2 +/-    0.96       6.7 +/-    0.96  0.060 / 0.050
G13     44.4           22.2                3.3 +/-    1.19       6.9 +/-    1.19  0.050 / 0.040
G15     62.8           50.4                6.3 +/-    0.54       7.9 +/-    0.54  0.130 / 0.270
G16     284.3          13.0                4.1 +/-    1.96      10.7 +/-    1.96  0.160 / 0.180
G20     47.9           43.7                5.3 +/-    0.62       7.2 +/-    0.62  0.060 / 0.070
G21     358.4          70.2                5.0 +/-    0.70       5.3 +/-    0.70  0.060 / 0.090
G24     124.4          11.6                6.9 +/-    2.13      18.7 +/-    2.13  0.170 / 0.290
G27     319.9          16.4                2.5 +/-    2.45       6.1 +/-    2.45  0.110 / 0.320
G29     166.9          34.3                8.2 +/-    0.83      13.1 +/-    0.83  0.070 / 0.260