PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/16-06:57:40
G10     276.8          44.2                6.0 +/-    1.27       8.2 +/-    1.27  0.040 / 0.040
G13     38.6           11.2                2.2 +/-    8.62       6.1 +/-    8.62  0.040 / 0.040
G15     51.6           40.9                4.7 +/-    0.68       6.7 +/-    0.68  0.110 / 0.070
G20     315.2          63.4                4.8 +/-    0.61       5.3 +/-    0.61  0.060 / 0.060
G21     37.3           75.8                5.5 +/-    0.44       5.6 +/-    0.44  0.130 / 0.270
G24     112.4          19.0                7.0 +/-    1.47      15.8 +/-    1.47  0.090 / 0.330
G27     315.3          23.6                3.0 +/-    1.49       6.0 +/-    1.49  0.240 / 0.250
G29     166.0          18.9                6.6 +/-    1.32      14.9 +/-    1.32  0.210 / 0.280
G32     206.9          11.5                0.6 +/-   22.91       1.6 +/-   22.91  0.120 / 0.120