PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/12-16:57:50
G10     291.7          50.8               13.1 +/-    2.62      16.4 +/-    2.62  0.060 / 0.080
G15     46.7           30.3                8.7 +/-    1.46      15.1 +/-    1.46  0.080 / 0.100
G20     346.6          65.4               12.2 +/-    0.65      13.2 +/-    0.65  0.120 / 0.180
G21     76.4           76.2               14.7 +/-    1.07      15.1 +/-    1.07  0.190 / 0.220
G24     105.0          24.5               14.3 +/-    1.44      28.3 +/-    1.44  0.040 / 0.030
G27     306.0          31.9               11.8 +/-    1.05      19.8 +/-    1.05  0.040 / 0.040
G29     168.2          13.3               15.2 +/-    0.89      39.4 +/-    0.89  0.100 / 0.090
G32     207.7          28.1               17.1 +/-    1.52      31.1 +/-    1.52  0.080 / 0.110