PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/16-17:27:10
G02     46.0           45.0                6.7 +/-    1.19       9.0 +/-    1.19  0.030 / 0.040
G05     95.5           70.7                7.4 +/-    0.98       7.8 +/-    0.98  0.030 / 0.030
G12     184.7          44.5                8.9 +/-    2.00      12.1 +/-    2.00  0.050 / 0.080
G25     256.5          58.6                8.5 +/-    0.55       9.8 +/-    0.55  0.030 / 0.070
G29     319.4          41.9                8.4 +/-    1.09      11.8 +/-    1.09  0.040 / 0.050