PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/11-09:57:50
G01     313.8          27.0                3.0 +/-    2.42       5.7 +/-    2.42  0.050 / 0.060
G10     95.8           46.3                4.4 +/-    0.56       5.8 +/-    0.56  0.040 / 0.060
G11     292.9          26.4                3.4 +/-    1.22       6.4 +/-    1.22  0.030 / 0.040
G14     319.5          69.6                3.5 +/-    0.73       3.8 +/-    0.73  0.030 / 0.040
G18     292.1          46.5                4.9 +/-    0.97       6.5 +/-    0.97  0.120 / 0.260
G22     307.3          23.1                2.7 +/-    1.71       5.5 +/-    1.71  0.110 / 0.260
G25     91.6           13.5                3.9 +/-    1.46      10.1 +/-    1.46  0.080 / 0.210
G31     169.4          56.9                6.1 +/-    1.20       7.1 +/-    1.20  0.090 / 0.220
G32     28.1           57.6                4.0 +/-    0.79       4.7 +/-    0.79  0.070 / 0.130