PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/17-22:28:10
G10     249.1          25.6               13.8 +/-    1.58      26.5 +/-    1.58  0.040 / 0.050
G13     55.1           30.7               10.1 +/-    0.97      17.5 +/-    0.97  0.040 / 0.050
G15     96.4           59.3               10.7 +/-    0.70      12.2 +/-    0.70  0.120 / 0.430
G16     295.8          16.1                9.6 +/-    1.39      23.1 +/-    1.39  0.140 / 0.310
G20     253.1          19.0               14.2 +/-    4.13      32.0 +/-    4.13  0.060 / 0.130
G21     330.1          58.1                9.9 +/-    0.36      11.4 +/-    0.36  0.080 / 0.160
G26     267.9          16.4               14.1 +/-    2.47      33.9 +/-    2.47  0.030 / 0.030
G29     164.8          53.3               10.4 +/-    0.59      12.7 +/-    0.59  0.030 / 0.040