PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/23-15:57:50
G02     18.2           65.3                8.0 +/-    0.37       8.7 +/-    0.37  0.040 / 0.050
G05     155.8          52.3               12.1 +/-    1.18      14.9 +/-    1.18  0.040 / 0.050
G06     49.5           21.7                7.8 +/-    0.66      16.4 +/-    0.66  0.030 / 0.030
G12     206.6          75.3                9.2 +/-    0.86       9.5 +/-    0.86  0.030 / 0.030
G19     91.1           18.7                9.8 +/-    1.39      22.2 +/-    1.39  0.060 / 0.070
G25     305.7          49.4               10.2 +/-    1.71      12.9 +/-    1.71  0.040 / 0.070
G29     300.8          21.1                9.9 +/-    1.66      21.2 +/-    1.66  0.100 / 0.150