PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/19-13:13:10
G02     51.1           39.9                3.9 +/-    0.80       5.7 +/-    0.80  0.050 / 0.050
G05     83.4           69.8                6.0 +/-    0.48       6.4 +/-    0.48  0.040 / 0.040
G12     186.4          43.0                6.3 +/-    0.76       8.8 +/-    0.76  0.040 / 0.050
G21     264.6          13.0                2.9 +/-   12.60       7.6 +/-   12.60  0.040 / 0.050
G25     243.6          57.5                5.5 +/-    1.12       6.4 +/-    1.12  0.240 / 0.270
G29     322.7          46.4                4.6 +/-    0.57       6.1 +/-    0.57  0.220 / 0.330