PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/09-22:57:50
G10     247.7          24.4               11.7 +/-    2.18      23.1 +/-    2.18  0.130 / 0.530
G13     56.7           31.6                9.4 +/-    0.53      16.0 +/-    0.53  0.150 / 0.570
G15     99.5           59.1                9.6 +/-    0.49      11.1 +/-    0.49  0.100 / 0.130
G16     297.5          16.1                9.0 +/-    2.72      21.7 +/-    2.72  0.080 / 0.150
G20     253.1          22.0                7.4 +/-    3.02      15.6 +/-    3.02  0.040 / 0.050
G21     328.3          57.0                7.8 +/-    0.67       9.1 +/-    0.67  0.040 / 0.050
G26     269.5          17.1               13.2 +/-    2.72      31.2 +/-    2.72  0.040 / 0.050
G29     164.3          55.1               11.6 +/-    1.62      13.8 +/-    1.62  0.040 / 0.070