PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/18-00:12:50
G02     231.5          72.7               10.4 +/-    0.54      10.9 +/-    0.54  0.050 / 0.100
G05     172.7          12.7               15.3 +/-    3.84      40.1 +/-    3.84  0.070 / 0.070
G06     42.2           66.6                7.7 +/-    0.52       8.3 +/-    0.52  0.060 / 0.060
G12     320.3          44.4                8.1 +/-    0.93      11.0 +/-    0.93  0.050 / 0.070
G17     67.2           24.3               10.2 +/-    2.66      20.3 +/-    2.66  0.050 / 0.050
G19     52.1           41.3                7.7 +/-    1.20      11.0 +/-    1.20  0.050 / 0.050
G24     248.8          37.1               10.3 +/-    2.20      15.7 +/-    2.20  0.180 / 0.220