PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/17-04:13:10
G05     49.7           14.1                2.4 +/-    1.04       6.1 +/-    1.04  0.120 / 0.310
G10     237.4          13.6               11.7 +/-    2.40      30.2 +/-    2.40  0.110 / 0.310
G13     73.6           36.4                7.2 +/-    0.38      11.1 +/-    0.38  0.100 / 0.250
G15     121.2          53.4                9.2 +/-    0.70      11.2 +/-    0.70  0.070 / 0.220
G16     311.9          13.4                8.0 +/-    2.11      20.6 +/-    2.11  0.230 / 0.450
G20     260.3          58.3               12.7 +/-    0.74      14.7 +/-    0.74  0.180 / 0.370
G21     314.5          47.9                8.6 +/-    1.36      11.1 +/-    1.36  0.050 / 0.060
G25     199.0          9.7                 0.5 +/-   34.86       1.3 +/-   34.86  0.050 / 0.060
G26     284.1          20.6                9.4 +/-    1.21      20.4 +/-    1.21  0.360 / 0.600
G29     157.6          70.9                9.6 +/-    0.99      10.1 +/-    0.99  0.210 / 0.410