PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/19-11:12:50
G08     312.3          16.5                5.6 +/-    1.21      13.4 +/-    1.21  0.170 / 0.180
G10     332.0          60.0                4.0 +/-    0.40       4.5 +/-    0.40  0.190 / 0.250
G14     218.6          28.7                5.1 +/-    2.46       9.2 +/-    2.46  0.030 / 0.040
G20     82.2           15.7                3.4 +/-    2.82       8.3 +/-    2.82  0.030 / 0.040
G21     134.6          55.6                6.1 +/-    0.47       7.3 +/-    0.47  0.050 / 0.060
G24     74.0           30.2                5.2 +/-    0.61       9.1 +/-    0.61  0.050 / 0.060
G27     273.3          37.4                6.1 +/-    2.10       9.3 +/-    2.10  0.110 / 0.230
G32     223.8          53.9                6.3 +/-    2.24       7.6 +/-    2.24  0.120 / 0.290