PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/19-13:12:40
G02     50.7           40.3                3.3 +/-    0.64       4.7 +/-    0.64  0.050 / 0.050
G05     84.8           70.0                5.5 +/-    0.45       5.8 +/-    0.45  0.040 / 0.050
G12     186.5          43.5                5.9 +/-    1.94       8.1 +/-    1.94  0.230 / 0.480
G21     264.3          12.8                3.1 +/-    2.15       8.1 +/-    2.15  0.210 / 0.430
G25     244.5          57.7                7.0 +/-    0.57       8.1 +/-    0.57  0.050 / 0.070
G29     322.4          46.0                3.1 +/-    1.21       4.1 +/-    1.21  0.040 / 0.050