PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/25-21:42:40
G10     244.3          21.3               25.9 +/-    2.03      55.3 +/-    2.03  0.050 / 0.050
G13     61.2           33.4               16.0 +/-    1.37      26.2 +/-    1.37  0.030 / 0.050
G15     109.9          58.3               19.2 +/-    0.72      22.2 +/-    0.72  0.140 / 0.430
G16     301.6          16.0               15.7 +/-    1.63      38.1 +/-    1.63  0.170 / 0.430
G20     247.7          10.9               10.5 +/-    2.34      28.7 +/-    2.34  0.060 / 0.110
G21     323.6          54.0               18.4 +/-    0.37      22.2 +/-    0.37  0.060 / 0.110
G26     273.7          18.5               20.2 +/-    2.18      46.2 +/-    2.18  0.030 / 0.030
G29     162.8          60.2               20.3 +/-    0.82      23.0 +/-    0.82  0.030 / 0.030