PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/27-15:58:10
G02     53.2           37.8                9.1 +/-    1.03      13.7 +/-    1.03  0.020 / 0.030
G05     74.6           68.4                9.9 +/-    0.57      10.6 +/-    0.57  0.020 / 0.040
G12     184.4          39.4               13.3 +/-    1.71      19.6 +/-    1.71  0.220 / 0.630
G21     266.0          12.3               11.3 +/-    3.23      30.0 +/-    3.23  0.230 / 0.730
G25     249.6          56.0               12.3 +/-    1.27      14.5 +/-    1.27  0.080 / 0.080
G29     323.7          47.5                8.8 +/-    1.13      11.5 +/-    1.13  0.050 / 0.080