PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/13-06:43:00
G03     211.2          56.9                4.3 +/-    0.96       5.0 +/-    0.96  0.220 / 0.270
G07     259.3          19.3                5.0 +/-    1.06      11.3 +/-    1.06  0.200 / 0.320
G09     311.0          29.4                3.9 +/-    1.00       7.0 +/-    1.00  0.070 / 0.140
G16     90.0           63.4                5.1 +/-    0.96       5.7 +/-    0.96  0.090 / 0.190
G22     189.7          40.5                4.6 +/-    0.60       6.6 +/-    0.60  0.040 / 0.040
G23     336.3          64.2                4.3 +/-    0.46       4.7 +/-    0.46  0.040 / 0.040
G26     52.4           41.6                3.5 +/-    0.94       5.0 +/-    0.94  0.070 / 0.110
G27     133.5          11.2                2.5 +/-    2.51       6.8 +/-    2.51  0.100 / 0.110