PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/29-12:12:30
G10     249.6          25.3                5.6 +/-    1.61      10.9 +/-    1.61  0.080 / 0.270
G13     55.3           31.4                4.5 +/-    1.49       7.7 +/-    1.49  0.110 / 0.290
G15     86.0           56.7                7.0 +/-    0.77       8.2 +/-    0.77  0.030 / 0.030
G16     299.0          14.6                3.0 +/-    2.83       7.6 +/-    2.83  0.030 / 0.040
G20     37.8           54.2                5.1 +/-    0.45       6.1 +/-    0.45  0.050 / 0.040
G21     336.7          61.6                4.9 +/-    0.75       5.4 +/-    0.75  0.050 / 0.040
G26     269.7          16.0                6.1 +/-    1.43      14.7 +/-    1.43  0.110 / 0.150
G29     163.3          48.9                8.2 +/-    0.71      10.5 +/-    0.71  0.130 / 0.150