PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/10-10:57:40
G01     289.0          40.5                0.8 +/-    0.94       1.1 +/-    0.94  0.040 / 0.050
G03     312.8          19.9                1.7 +/-    1.62       3.8 +/-    1.62  0.050 / 0.050
G10     120.9          27.6                6.6 +/-    0.78      12.2 +/-    0.78  0.040 / 0.060
G11     264.9          25.3                6.5 +/-    2.61      12.6 +/-    2.61  0.040 / 0.060
G14     18.7           60.6                5.1 +/-    1.15       5.8 +/-    1.15  0.050 / 0.070
G18     251.9          46.8                6.8 +/-    2.70       9.0 +/-    2.70  0.040 / 0.070
G22     314.9          44.5                4.9 +/-    0.61       6.6 +/-    0.61  0.150 / 0.250
G25     66.0           19.1                2.6 +/-    1.19       5.8 +/-    1.19  0.080 / 0.200
G31     106.6          79.0                6.3 +/-    0.52       6.4 +/-    0.52  0.170 / 0.270
G32     53.7           39.5                3.5 +/-    0.88       5.1 +/-    0.88  0.130 / 0.320