PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-06:57:30
G08     299.7          21.4                4.7 +/-    1.43      10.0 +/-    1.43  0.060 / 0.120
G10     358.2          62.7                3.8 +/-    0.58       4.2 +/-    0.58  0.060 / 0.140
G14     226.3          38.2                9.3 +/-    2.62      14.0 +/-    2.62  0.050 / 0.090
G20     73.4           42.2                5.0 +/-    1.16       7.0 +/-    1.16  0.050 / 0.070
G21     144.3          45.0                7.3 +/-    1.20       9.8 +/-    1.20  0.070 / 0.110
G24     59.6           27.0                3.0 +/-    0.67       5.6 +/-    0.67  0.060 / 0.100
G27     258.6          33.5                6.1 +/-    1.52       9.9 +/-    1.52  0.030 / 0.030
G32     239.7          66.3                8.0 +/-    0.85       8.7 +/-    0.85  0.030 / 0.040