PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/23-05:42:50
G01     316.6          22.6                0.1 +/-   12.47       0.1 +/-   12.47  0.030 / 0.040
G08     251.0          10.3                3.8 +/-   17.97      10.5 +/-   17.97  0.030 / 0.060
G10     87.0           51.1                3.7 +/-    1.13       4.6 +/-    1.13  0.140 / 0.430
G11     295.7          27.4                1.1 +/-    2.90       2.1 +/-    2.90  0.120 / 0.310
G14     320.5          71.5                9.9 +/-   10.03      10.4 +/-   10.03  0.130 / 0.390
G18     105.5          27.1               -6.3 +/-   47.51     -11.7 +/-   47.51  0.130 / 0.440
G22     303.4          15.6                2.0 +/-    1.45       4.8 +/-    1.45  0.030 / 0.030
G25     92.1           10.8                0.3 +/-   24.08       0.8 +/-   24.08  0.030 / 0.030
G31     174.4          48.3               10.0 +/-   15.18      12.9 +/-   15.18  0.040 / 0.040
G32     15.6           63.9                0.0 +/-    8.87       0.0 +/-    8.87  0.040 / 0.050