PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/25-16:58:00
G02     28.7           59.4               13.1 +/-    0.26      14.9 +/-    0.26  0.030 / 0.030
G05     152.8          56.4               16.3 +/-    0.85      19.1 +/-    0.85  0.030 / 0.040
G06     51.4           20.2               10.0 +/-    1.92      21.8 +/-    1.92  0.090 / 0.210
G12     208.0          72.3               12.7 +/-    0.92      13.2 +/-    0.92  0.080 / 0.210
G19     97.7           10.7               12.2 +/-    2.83      33.4 +/-    2.83  0.040 / 0.060
G20     197.9          22.4               14.5 +/-    1.78      30.1 +/-    1.78  0.040 / 0.050
G25     300.1          53.2               13.2 +/-    1.12      16.0 +/-    1.12  0.040 / 0.050
G29     306.4          28.6               11.7 +/-    2.01      21.2 +/-    2.01  0.030 / 0.050