PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/13-16:12:20
G02     36.0           52.3                8.8 +/-    0.79      10.8 +/-    0.79  0.170 / 0.270
G05     132.3          66.1               10.3 +/-    0.80      11.2 +/-    0.80  0.170 / 0.370
G06     56.8           10.5                8.3 +/-    1.25      22.9 +/-    1.25  0.040 / 0.060
G12     191.6          61.5                9.2 +/-    0.51      10.3 +/-    0.51  0.040 / 0.050
G25     288.7          55.8                7.7 +/-    1.65       9.1 +/-    1.65  0.040 / 0.050
G29     310.8          31.7                8.4 +/-    1.09      14.2 +/-    1.09  0.050 / 0.050