PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/04-16:57:40
G02     38.8           50.2                8.6 +/-    1.41      10.8 +/-    1.41  0.030 / 0.040
G05     121.8          68.4               11.0 +/-    0.40      11.8 +/-    0.40  0.030 / 0.050
G12     190.1          57.6               10.5 +/-    0.63      12.1 +/-    0.63  0.070 / 0.050
G25     282.0          57.2               11.7 +/-    1.94      13.7 +/-    1.94  0.050 / 0.050
G29     313.4          34.7                8.5 +/-    1.94      13.6 +/-    1.94  0.050 / 0.050