PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/18-05:28:00
G01     220.5          12.7                3.5 +/-    3.88       9.3 +/-    3.88  0.100 / 0.250
G03     270.8          70.2                4.3 +/-    1.27       4.6 +/-    1.27  0.120 / 0.250
G09     297.3          11.3               -5.3 +/-   29.29     -14.4 +/-   29.29  0.040 / 0.070
G14     90.7           21.8                2.2 +/-    2.66       4.6 +/-    2.66  0.060 / 0.060
G16     139.0          50.5                4.5 +/-    0.76       5.6 +/-    0.76  0.050 / 0.070
G22     208.3          65.6                3.8 +/-    0.64       4.2 +/-    0.64  0.050 / 0.070
G23     313.9          44.4                3.4 +/-    0.79       4.6 +/-    0.79  0.240 / 0.360
G26     85.7           54.1                3.4 +/-    0.55       4.1 +/-    0.55  0.200 / 0.310
G31     48.3           25.6                2.8 +/-    2.41       5.3 +/-    2.41  0.040 / 0.040