PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/13-04:12:30
G01     230.9          21.5               10.0 +/-    1.83      21.2 +/-    1.83  0.040 / 0.040
G03     301.2          62.3                4.5 +/-    0.62       5.0 +/-    0.62  0.040 / 0.040
G14     80.6           28.7                3.9 +/-    1.25       7.0 +/-    1.25  0.050 / 0.090
G16     149.4          39.8                8.4 +/-    0.46      12.3 +/-    0.46  0.050 / 0.110
G18     206.2          10.8                7.0 +/-    1.79      19.1 +/-    1.79  0.050 / 0.050
G22     238.6          74.4                5.3 +/-    0.63       5.5 +/-    0.63  0.050 / 0.050
G23     302.4          32.4                5.8 +/-    1.60       9.7 +/-    1.60  0.130 / 0.210
G26     106.9          52.3                7.2 +/-    0.41       8.8 +/-    0.41  0.120 / 0.160
G31     43.4           36.9                3.2 +/-    0.33       5.0 +/-    0.33  0.090 / 0.180