PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/11-20:12:40
G10     259.6          35.0               14.6 +/-    1.26      23.1 +/-    1.26  0.040 / 0.060
G13     45.6           22.6               10.7 +/-    2.22      22.0 +/-    2.22  0.040 / 0.040
G15     69.5           54.3               13.0 +/-    0.63      15.6 +/-    0.63  0.150 / 0.230
G16     285.8          14.6               10.9 +/-    1.99      27.3 +/-    1.99  0.110 / 0.270
G20     285.8          57.2               12.3 +/-    1.72      14.3 +/-    1.72  0.040 / 0.040
G21     346.7          66.2               13.8 +/-    0.95      15.0 +/-    0.95  0.040 / 0.030
G24     128.0          9.7               -15.9 +/-   17.70     -44.5 +/-   17.70  0.220 / 0.470
G26     259.4          11.4               14.1 +/-    2.94      38.1 +/-    2.94  0.220 / 0.350
G27     321.6          12.5                8.8 +/-    3.85      23.3 +/-    3.85  0.120 / 0.190
G29     166.0          39.9               14.6 +/-    0.95      21.3 +/-    0.95  0.120 / 0.230