PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/07-17:12:40
G02     73.0           23.4               19.7 +/-    0.43      40.0 +/-    0.43  0.070 / 0.130
G05     45.6           48.0               18.6 +/-    0.81      24.1 +/-    0.81  0.090 / 0.130
G12     179.5          13.1               16.9 +/-    1.64      43.9 +/-    1.64  0.110 / 0.200
G13     111.7          27.0               20.9 +/-    0.80      39.0 +/-    0.80  0.100 / 0.200
G15     157.4          25.4               21.0 +/-    0.95      40.6 +/-    0.95  0.030 / 0.050
G20     227.4          12.8               15.3 +/-    5.03      40.1 +/-    5.03  0.030 / 0.060
G21     286.9          28.8               17.8 +/-    1.61      32.0 +/-    1.61  0.070 / 0.310
G25     213.7          35.4               19.5 +/-    1.74      30.7 +/-    1.74  0.060 / 0.360
G26     315.6          13.3               15.5 +/-    1.33      40.2 +/-    1.33  0.100 / 0.180
G29     341.9          72.7               20.5 +/-    0.73      21.4 +/-    0.73  0.110 / 0.200