PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/19-23:13:10
G10     243.8          22.2               12.5 +/-    1.33      26.0 +/-    1.33  0.040 / 0.050
G13     61.3           32.7                7.7 +/-    1.00      12.7 +/-    1.00  0.040 / 0.060
G15     102.9          57.3               11.4 +/-    0.79      13.3 +/-    0.79  0.080 / 0.110
G16     304.6          14.9                6.5 +/-    1.18      16.2 +/-    1.18  0.080 / 0.130
G20     259.6          44.8               11.3 +/-    3.60      15.3 +/-    3.60  0.030 / 0.040
G21     324.2          53.8                9.2 +/-    0.55      11.1 +/-    0.55  0.040 / 0.040
G26     276.7          18.2                9.6 +/-    1.16      22.2 +/-    1.16  0.180 / 0.130
G29     159.8          58.9               12.1 +/-    0.92      13.8 +/-    0.92  0.100 / 0.130