PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/25-05:42:40
G05     49.6           14.3                1.9 +/-    2.46       4.9 +/-    2.46  0.090 / 0.280
G10     237.1          13.2                6.1 +/-    1.92      15.9 +/-    1.92  0.120 / 0.290
G13     74.4           36.5                6.5 +/-    0.52      10.1 +/-    0.52  0.100 / 0.240
G15     121.0          53.2                8.9 +/-    0.34      10.8 +/-    0.34  0.090 / 0.160
G16     312.6          13.1                4.4 +/-    3.04      11.4 +/-    3.04  0.140 / 0.460
G20     275.6          69.7                7.9 +/-    0.79       8.3 +/-    0.79  0.170 / 0.460
G21     314.4          47.9                5.3 +/-    0.87       6.9 +/-    0.87  0.300 / 0.610
G25     199.4          10.2               -0.6 +/-   28.27      -1.5 +/-   28.27  0.320 / 0.520
G26     284.8          20.6                5.6 +/-    1.66      12.0 +/-    1.66  0.050 / 0.060
G29     157.0          71.1                8.4 +/-    0.94       8.8 +/-    0.94  0.050 / 0.050