PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/31-04:58:00
G03     238.3          68.2                7.4 +/-    0.75       7.9 +/-    0.75  0.130 / 0.300
G09     303.7          19.0                7.1 +/-    1.41      16.1 +/-    1.41  0.110 / 0.380
G14     99.2           15.6                6.8 +/-    1.95      16.6 +/-    1.95  0.100 / 0.150
G16     122.7          58.9                9.7 +/-    0.39      11.2 +/-    0.39  0.090 / 0.140
G22     197.5          55.4                7.6 +/-    0.65       9.0 +/-    0.65  0.040 / 0.050
G23     321.9          51.9                7.8 +/-    1.06       9.7 +/-    1.06  0.040 / 0.050
G26     67.9           50.8                8.0 +/-    0.58      10.0 +/-    0.58  0.040 / 0.050
G31     53.2           17.5                5.2 +/-    2.76      12.2 +/-    2.76  0.040 / 0.040