PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/23-10:27:40
G08     268.8          16.7                6.1 +/-    1.61      14.5 +/-    1.61  0.190 / 0.230
G10     65.9           57.4                4.0 +/-    0.48       4.6 +/-    0.48  0.240 / 0.240
G11     310.9          17.5                3.9 +/-    1.82       9.2 +/-    1.82  0.040 / 0.040
G14     267.7          64.4                4.7 +/-    0.41       5.2 +/-    0.41  0.040 / 0.050
G18     311.3          33.1                3.0 +/-    1.40       5.0 +/-    1.40  0.140 / 0.280
G21     155.0          12.6                4.7 +/-    1.33      12.4 +/-    1.33  0.130 / 0.530
G27     229.3          13.9                4.2 +/-    2.55      10.6 +/-    2.55  0.110 / 0.250
G31     176.3          34.9                4.1 +/-    1.19       6.5 +/-    1.19  0.170 / 0.300
G32     353.1          72.1                4.6 +/-    0.33       4.8 +/-    0.33  0.280 / 0.280