PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/15-05:28:00
G01     222.4          13.3                7.8 +/-    2.71      20.3 +/-    2.71  0.060 / 0.070
G03     277.3          68.1                5.7 +/-    0.46       6.1 +/-    0.46  0.060 / 0.110
G09     298.0          13.1                5.3 +/-    1.43      13.7 +/-    1.43  0.060 / 0.080
G14     92.0           19.5                5.4 +/-    3.40      12.0 +/-    3.40  0.050 / 0.070
G16     146.1          49.1                8.5 +/-    1.15      10.8 +/-    1.15  0.130 / 0.590
G22     207.0          66.6                7.3 +/-    0.36       7.9 +/-    0.36  0.120 / 0.520
G23     310.2          39.5                4.2 +/-    0.97       6.2 +/-    0.97  0.030 / 0.030
G26     93.0           56.0                5.6 +/-    0.73       6.6 +/-    0.73  0.030 / 0.030
G31     46.5           29.9                4.1 +/-    1.07       7.2 +/-    1.07  0.110 / 0.190