PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/19-11:27:50
G01     249.3          34.4                5.3 +/-    1.08       8.5 +/-    1.08  0.080 / 0.150
G03     315.5          46.8                3.3 +/-    0.82       4.3 +/-    0.82  0.060 / 0.110
G11     236.9          11.5                4.2 +/-    2.20      11.4 +/-    2.20  0.040 / 0.100
G14     58.2           43.8                0.0 +/-    0.42       0.0 +/-    0.42  0.040 / 0.080
G18     220.3          26.4                4.0 +/-    1.09       7.6 +/-    1.09  0.040 / 0.060
G22     298.0          71.9                6.1 +/-    0.88       6.4 +/-    0.88  0.030 / 0.070
G23     289.8          24.0               -0.2 +/-    7.46      -0.4 +/-    7.46  0.040 / 0.070
G26     132.1          40.1                8.0 +/-    0.91      11.7 +/-    0.91  0.060 / 0.070
G31     41.1           54.3                3.1 +/-    0.44       3.8 +/-    0.44  0.040 / 0.040
G32     79.6           20.3                2.7 +/-    1.32       5.9 +/-    1.32  0.030 / 0.030