PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/30-15:27:50
G02     46.5           43.4                8.3 +/-    0.62      11.5 +/-    0.62  0.030 / 0.030
G05     101.7          70.7                8.8 +/-    1.00       9.2 +/-    1.00  0.030 / 0.030
G12     186.1          48.5                9.4 +/-    2.08      12.1 +/-    2.08  0.040 / 0.060
G25     266.5          58.1                8.2 +/-    0.64       9.5 +/-    0.64  0.040 / 0.060
G29     318.1          40.3                8.2 +/-    2.06      11.9 +/-    2.06  0.050 / 0.060