PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/28-16:42:30
G02     27.6           60.3               20.0 +/-    0.90      22.6 +/-    0.90  0.050 / 0.060
G05     153.8          55.3               23.9 +/-    0.42      28.5 +/-    0.42  0.040 / 0.050
G06     50.8           21.3               14.8 +/-    2.58      31.6 +/-    2.58  0.030 / 0.020
G12     211.1          73.5               20.0 +/-    1.32      20.8 +/-    1.32  0.030 / 0.030
G19     96.7           11.5               14.2 +/-    2.71      38.5 +/-    2.71  0.040 / 0.030
G20     197.9          21.1               28.1 +/-    2.26      60.1 +/-    2.26  0.040 / 0.030
G25     301.8          52.2               18.8 +/-    3.24      23.2 +/-    3.24  0.120 / 0.200
G29     305.6          27.9               19.3 +/-    1.73      35.3 +/-    1.73  0.110 / 0.240