PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/08-20:57:40
G10     275.9          44.2                9.8 +/-    0.83      13.3 +/-    0.83  0.040 / 0.040
G13     38.7           11.5                8.1 +/-    4.22      21.9 +/-    4.22  0.050 / 0.050
G15     53.3           44.0                8.9 +/-    0.87      12.2 +/-    0.87  0.100 / 0.170
G20     314.4          63.3                9.8 +/-    0.80      10.8 +/-    0.80  0.080 / 0.150
G21     21.7           75.3                9.7 +/-    0.68      10.0 +/-    0.68  0.210 / 0.630
G24     115.8          18.3               12.8 +/-    2.10      29.3 +/-    2.10  0.210 / 0.610
G27     315.2          24.0                7.5 +/-    2.84      15.0 +/-    2.84  0.030 / 0.050
G29     167.9          24.3               12.9 +/-    1.54      25.5 +/-    1.54  0.030 / 0.050
G32     205.1          15.8               17.4 +/-    2.34      42.4 +/-    2.34  0.050 / 0.080