PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/12-15:27:50
G10     246.9          25.6               12.9 +/-    1.79      24.9 +/-    1.79  0.040 / 0.050
G13     57.0           30.8               10.4 +/-    1.72      17.8 +/-    1.72  0.030 / 0.040
G15     90.9           56.9               13.5 +/-    0.81      15.8 +/-    0.81  0.030 / 0.040
G20     266.5          50.3               15.5 +/-    2.45      19.5 +/-    2.45  0.040 / 0.050
G21     329.6          57.0               11.2 +/-    0.43      13.1 +/-    0.43  0.110 / 0.150
G26     272.5          17.0               11.3 +/-    2.49      26.9 +/-    2.49  0.210 / 0.190
G29     162.4          56.3               17.2 +/-    0.80      20.2 +/-    0.80  0.090 / 0.150