PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/07-06:43:10
G01     231.2          21.7                7.6 +/-    2.14      16.1 +/-    2.14  0.030 / 0.030
G03     301.8          61.8                5.3 +/-    0.95       5.9 +/-    0.95  0.030 / 0.030
G14     80.0           29.5                5.0 +/-    3.02       8.8 +/-    3.02  0.280 / 0.210
G16     148.5          40.0                6.7 +/-    0.82       9.8 +/-    0.82  0.090 / 0.230
G18     207.0          11.4                3.4 +/-    1.68       9.1 +/-    1.68  0.110 / 0.120
G22     238.6          74.5                6.0 +/-    0.38       6.2 +/-    0.38  0.110 / 0.120
G23     302.5          32.9                3.8 +/-    1.71       6.3 +/-    1.71  0.060 / 0.100
G26     105.3          52.0                6.9 +/-    0.56       8.4 +/-    0.56  0.060 / 0.130
G31     43.7           35.7                3.1 +/-    1.09       4.9 +/-    1.09  0.050 / 0.080