PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/18-01:57:40
G01     291.2          40.2                2.1 +/-    5.91       3.0 +/-    5.91  0.070 / 0.080
G03     311.7          15.8                5.4 +/-    2.29      13.1 +/-    2.29  0.080 / 0.090
G10     119.6          28.4                7.7 +/-    2.16      14.0 +/-    2.16  0.040 / 0.040
G11     264.2          25.9                8.0 +/-    1.94      15.4 +/-    1.94  0.040 / 0.040
G14     22.6           59.4                7.0 +/-    0.85       7.9 +/-    0.85  0.060 / 0.060
G18     251.4          47.7                6.5 +/-   10.31       8.4 +/-   10.31  0.070 / 0.090
G22     313.7          37.5                6.1 +/-    0.61       9.3 +/-    0.61  0.130 / 0.210
G25     65.0           17.9                5.2 +/-    1.31      12.0 +/-    1.31  0.140 / 0.240
G31     126.0          78.8                7.6 +/-    0.65       7.8 +/-    0.65  0.080 / 0.130
G32     51.7           41.2                5.1 +/-    1.31       7.3 +/-    1.31  0.090 / 0.130