PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/03-17:57:40
G02     63.9           29.2               14.3 +/-    0.62      25.4 +/-    0.62  0.080 / 0.140
G05     54.2           60.2               14.5 +/-    0.71      16.4 +/-    0.71  0.070 / 0.120
G12     184.6          27.4               17.2 +/-    1.65      31.9 +/-    1.65  0.080 / 0.280
G13     125.7          18.7               18.1 +/-    1.96      41.0 +/-    1.96  0.070 / 0.250
G15     160.7          16.2               21.1 +/-    2.40      51.0 +/-    2.40  0.050 / 0.070
G20     211.2          66.0               17.8 +/-    1.02      19.3 +/-    1.02  0.040 / 0.070
G21     276.1          22.2               13.2 +/-    1.75      27.6 +/-    1.75  0.030 / 0.040
G25     226.1          47.0               18.0 +/-    0.82      23.6 +/-    0.82  0.020 / 0.040
G29     337.0          64.3               15.2 +/-    0.85      16.7 +/-    0.85  0.130 / 0.540