PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/11-08:13:10
G03     246.4          67.9                4.8 +/-    0.48       5.2 +/-    0.48  0.030 / 0.060
G09     304.3          20.7                4.3 +/-    2.02       9.2 +/-    2.02  0.050 / 0.070
G14     100.4          12.9                3.8 +/-    2.12       9.9 +/-    2.12  0.050 / 0.060
G16     130.1          59.0                6.8 +/-    0.54       7.8 +/-    0.54  0.060 / 0.070
G22     194.1          55.7                6.2 +/-    1.66       7.3 +/-    1.66  0.030 / 0.040
G23     318.0          47.5                2.8 +/-    1.41       3.7 +/-    1.41  0.030 / 0.050
G26     71.7           53.1                4.2 +/-    0.36       5.1 +/-    0.36  0.160 / 0.430
G31     51.8           20.4                1.1 +/-    1.18       2.4 +/-    1.18  0.140 / 0.470