PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/14-15:42:40
G02     50.7           40.8                5.0 +/-    1.36       7.3 +/-    1.36  0.050 / 0.060
G05     85.3           70.8                7.7 +/-    0.55       8.1 +/-    0.55  0.060 / 0.070
G12     185.0          40.9                9.2 +/-    1.59      13.1 +/-    1.59  0.030 / 0.020
G21     264.7          12.4                7.6 +/-    8.46      20.0 +/-    8.46  0.040 / 0.030
G25     245.6          57.1                6.4 +/-    0.98       7.5 +/-    0.98  0.050 / 0.040
G29     322.5          46.1                7.7 +/-    1.28      10.3 +/-    1.28  0.050 / 0.040