PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/17-08:12:50
G01     230.2          20.7                6.5 +/-    2.46      13.9 +/-    2.46  0.030 / 0.030
G03     298.9          63.6                5.2 +/-    0.61       5.7 +/-    0.61  0.040 / 0.030
G14     80.9           29.4                4.5 +/-    1.82       7.9 +/-    1.82  0.180 / 0.370
G16     147.8          41.3                5.5 +/-    1.47       7.9 +/-    1.47  0.170 / 0.330
G18     206.5          10.5                5.9 +/-    2.85      16.3 +/-    2.85  0.080 / 0.150
G22     228.8          73.9                6.0 +/-    0.88       6.2 +/-    0.88  0.100 / 0.120
G23     304.2          34.8                4.5 +/-    0.86       7.2 +/-    0.86  0.040 / 0.070
G26     102.9          52.5                6.5 +/-    1.04       7.9 +/-    1.04  0.040 / 0.080
G31     44.1           34.5                3.5 +/-    1.28       5.6 +/-    1.28  0.070 / 0.110