PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/31-09:12:40
G01     68.0           32.4                4.2 +/-    0.54       7.1 +/-    0.54  0.040 / 0.060
G07     138.6          27.6                5.7 +/-    1.40      10.5 +/-    1.40  0.040 / 0.050
G11     52.0           28.1                1.6 +/-    0.91       3.0 +/-    0.91  0.050 / 0.100
G13     273.6          36.6                6.7 +/-    1.51      10.4 +/-    1.51  0.060 / 0.090
G15     300.8          15.8                2.5 +/-    2.43       6.2 +/-    2.43  0.030 / 0.040
G17     240.1          73.1                6.7 +/-    0.78       6.9 +/-    0.78  0.030 / 0.030
G19     226.2          45.9                8.5 +/-    0.93      11.3 +/-    0.93  0.090 / 0.300
G28     24.7           58.4                4.0 +/-    0.58       4.6 +/-    0.58  0.080 / 0.320
G30     137.2          59.6                7.2 +/-    1.09       8.2 +/-    1.09  0.040 / 0.080