PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/19-16:27:20
G02     25.5           60.7                5.2 +/-    0.58       5.8 +/-    0.58  0.020 / 0.030
G05     149.2          58.5                7.8 +/-    0.95       9.0 +/-    0.95  0.020 / 0.040
G06     52.6           16.9                5.6 +/-    2.27      13.3 +/-    2.27  0.030 / 0.040
G12     195.1          68.8                6.3 +/-    0.31       6.7 +/-    0.31  0.030 / 0.040
G19     96.2           15.1                6.3 +/-    2.31      15.5 +/-    2.31  0.040 / 0.050
G25     298.5          53.7                5.2 +/-    1.68       6.2 +/-    1.68  0.040 / 0.050
G29     305.1          25.3                4.9 +/-    1.16       9.5 +/-    1.16  0.150 / 0.200