PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/30-13:58:10
G02     235.6          70.9                7.0 +/-    0.47       7.4 +/-    0.47  0.100 / 0.080
G05     174.9          12.6                5.8 +/-    6.70      15.2 +/-    6.70  0.120 / 0.090
G06     41.1           59.1                6.1 +/-    0.52       7.0 +/-    0.52  0.220 / 0.280
G12     322.2          53.0                6.3 +/-    0.88       7.7 +/-    0.88  0.120 / 0.250
G17     70.5           21.7                6.0 +/-    2.17      12.7 +/-    2.17  0.040 / 0.050
G19     51.8           43.1                7.0 +/-    1.32       9.6 +/-    1.32  0.040 / 0.040
G24     243.4          35.4                7.2 +/-    1.99      11.3 +/-    1.99  0.230 / 0.390
G25     316.3          13.4                4.3 +/-    2.00      11.1 +/-    2.00  0.210 / 0.360