PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/19-01:12:30
G02     236.8          75.4                8.3 +/-    0.42       8.5 +/-    0.42  0.050 / 0.100
G05     171.5          15.2               11.2 +/-    1.68      27.7 +/-    1.68  0.050 / 0.070
G06     41.3           60.6                7.6 +/-    0.41       8.6 +/-    0.41  0.050 / 0.050
G12     321.4          49.4                8.1 +/-    0.66      10.3 +/-    0.66  0.040 / 0.050
G17     66.8           27.7                5.8 +/-    1.42      10.7 +/-    1.42  0.050 / 0.030
G19     54.3           40.7                7.7 +/-    0.85      11.1 +/-    0.85  0.050 / 0.030
G24     247.8          36.0               10.2 +/-    1.78      15.9 +/-    1.78  0.110 / 0.150