PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/26-13:12:50
G01     118.4          18.4                6.0 +/-    1.22      13.7 +/-    1.22  0.040 / 0.040
G07     82.6           66.1                4.6 +/-    0.35       5.0 +/-    0.35  0.030 / 0.040
G08     44.3           29.9                3.0 +/-    0.87       5.2 +/-    0.87  0.110 / 0.290
G09     175.6          23.5                6.1 +/-    1.46      12.4 +/-    1.46  0.130 / 0.240
G11     104.7          40.2                5.5 +/-    0.52       7.9 +/-    0.52  0.040 / 0.060
G13     317.2          20.2                2.7 +/-    4.09       5.9 +/-    4.09  0.040 / 0.060
G17     201.7          25.7                5.9 +/-    1.35      11.3 +/-    1.35  0.040 / 0.070
G18     93.0           21.1                5.2 +/-    0.78      11.1 +/-    0.78  0.050 / 0.090
G28     293.9          57.6                4.3 +/-    0.90       5.0 +/-    0.90  0.030 / 0.040
G30     345.8          68.6                2.2 +/-    1.06       2.3 +/-    1.06  0.020 / 0.040