PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/19-09:58:10
G01     69.7           32.7                5.5 +/-    0.75       9.1 +/-    0.75  0.040 / 0.060
G07     137.8          28.7                7.1 +/-    0.93      12.8 +/-    0.93  0.030 / 0.060
G11     52.8           28.8                2.9 +/-    0.88       5.3 +/-    0.88  0.110 / 0.420
G13     275.5          36.8                5.2 +/-    1.55       8.0 +/-    1.55  0.120 / 0.340
G15     302.3          15.4                0.5 +/-    3.32       1.2 +/-    3.32  0.040 / 0.040
G17     236.8          72.1                5.9 +/-    0.56       6.2 +/-    0.56  0.030 / 0.090
G19     225.1          44.6                7.1 +/-    1.26       9.6 +/-    1.26  0.050 / 0.110
G28     22.1           58.8                4.5 +/-    0.40       5.2 +/-    0.40  0.080 / 0.100
G30     135.7          61.5                8.2 +/-    0.82       9.2 +/-    0.82  0.040 / 0.080