PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/07-19:57:50
G10     275.2          42.9               20.8 +/-    2.13      29.0 +/-    2.13  0.040 / 0.040
G13     39.0           12.4               15.1 +/-    3.45      40.0 +/-    3.45  0.030 / 0.030
G15     55.0           47.1               19.0 +/-    0.76      24.8 +/-    0.76  0.120 / 0.160
G20     312.3          63.1               19.4 +/-    0.79      21.5 +/-    0.79  0.100 / 0.170
G21     27.0           75.7               20.5 +/-    0.55      21.1 +/-    0.55  0.090 / 0.260
G24     111.2          18.5               23.1 +/-    1.27      52.6 +/-    1.27  0.260 / 0.380
G29     168.4          24.0               25.3 +/-    1.32      50.6 +/-    1.32  0.030 / 0.040
G32     205.2          16.4               27.6 +/-    3.61      66.5 +/-    3.61  0.040 / 0.050