PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/07-07:43:00
G07     45.6           69.4                4.9 +/-    0.76       5.2 +/-    0.76  0.040 / 0.040
G08     51.7           40.1                3.8 +/-    1.02       5.5 +/-    1.02  0.040 / 0.050
G09     174.1          34.3                6.8 +/-    1.20      10.9 +/-    1.20  0.030 / 0.030
G11     120.0          33.8                7.9 +/-    0.48      12.8 +/-    0.48  0.030 / 0.030
G17     198.8          13.5                3.0 +/-    1.29       7.8 +/-    1.29  0.150 / 0.300
G18     105.0          15.1                5.7 +/-    1.10      14.2 +/-    1.10  0.150 / 0.440
G23     161.2          11.9                3.9 +/-    1.82      10.4 +/-    1.82  0.110 / 0.310
G27     38.0           11.0                2.3 +/-    1.26       6.3 +/-    1.26  0.170 / 0.280
G28     270.0          50.2                4.3 +/-    1.16       5.5 +/-    1.16  0.060 / 0.090
G30     327.3          56.5                3.5 +/-    0.80       4.1 +/-    0.80  0.060 / 0.090