PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/25-00:12:30
G10     251.3          27.3               13.0 +/-    1.97      24.1 +/-    1.97  0.040 / 0.040
G13     52.8           29.4                9.0 +/-    1.92      15.9 +/-    1.92  0.040 / 0.040
G15     89.0           58.7               10.8 +/-    0.71      12.4 +/-    0.71  0.110 / 0.280
G16     293.4          15.9                8.6 +/-    1.60      21.0 +/-    1.60  0.110 / 0.260
G20     259.8          33.4                9.7 +/-    3.18      16.0 +/-    3.18  0.100 / 0.130
G21     333.4          60.1                9.5 +/-    0.39      10.8 +/-    0.39  0.060 / 0.160
G26     265.5          15.4               11.2 +/-    1.66      27.7 +/-    1.66  0.040 / 0.030
G29     165.5          50.2               11.8 +/-    0.65      14.9 +/-    0.65  0.040 / 0.040