PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/09-03:57:50
G02     59.9           31.7                3.8 +/-    2.25       6.3 +/-    2.25  0.090 / 0.190
G05     57.2           60.0                4.7 +/-    0.74       5.3 +/-    0.74  0.110 / 0.250
G12     186.4          35.1                7.6 +/-    1.17      12.1 +/-    1.17  0.060 / 0.060
G13     127.3          14.9                8.3 +/-    2.27      20.6 +/-    2.27  0.070 / 0.060
G15     162.9          12.8                6.7 +/-    3.45      17.5 +/-    3.45  0.190 / 0.390
G21     272.3          19.0                7.7 +/-    1.31      17.4 +/-    1.31  0.190 / 0.460
G25     234.7          51.9                8.2 +/-    2.32      10.1 +/-    2.32  0.060 / 0.090
G29     333.5          59.1                5.1 +/-    0.91       5.8 +/-    0.91  0.050 / 0.080