PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/07-03:27:50
G10     250.8          26.7               17.3 +/-    2.32      32.4 +/-    2.32  0.100 / 0.270
G13     53.5           29.9               13.0 +/-    1.72      22.8 +/-    1.72  0.080 / 0.200
G15     87.1           57.8               14.6 +/-    0.55      17.0 +/-    0.55  0.040 / 0.050
G16     294.5          15.7               10.8 +/-    1.34      26.4 +/-    1.34  0.030 / 0.040
G20     278.0          58.5               13.7 +/-    1.69      15.8 +/-    1.69  0.100 / 0.150
G21     333.1          59.9               13.2 +/-    0.78      15.0 +/-    0.78  0.090 / 0.130
G26     266.2          15.6               15.2 +/-    1.55      37.3 +/-    1.55  0.030 / 0.040
G29     165.3          50.5               16.9 +/-    0.45      21.2 +/-    0.45  0.030 / 0.040