PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/18-18:58:10
G10     304.4          54.7                9.1 +/-    1.37      10.9 +/-    1.37  0.120 / 0.100
G14     211.2          11.2               -4.6 +/-   20.99     -12.4 +/-   20.99  0.130 / 0.090
G15     45.6           23.9                8.4 +/-    2.12      16.7 +/-    2.12  0.180 / 0.510
G20     5.1            64.6                8.6 +/-    0.55       9.4 +/-    0.55  0.040 / 0.040
G21     104.7          72.4                9.7 +/-    0.93      10.1 +/-    0.93  0.040 / 0.040
G24     96.1           27.9                9.4 +/-    1.08      17.1 +/-    1.08  0.080 / 0.150
G27     297.3          35.7               11.1 +/-    1.07      17.3 +/-    1.07  0.070 / 0.130
G32     211.2          36.1               10.8 +/-    1.18      16.8 +/-    1.18  0.080 / 0.040