PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/11-08:58:00
G10     300.7          52.7                4.2 +/-    1.30       5.1 +/-    1.30  0.190 / 0.550
G14     211.5          11.0               -4.2 +/-   15.66     -11.3 +/-   15.66  0.180 / 0.350
G15     45.7           25.2                4.4 +/-    2.29       8.5 +/-    2.29  0.110 / 0.080
G20     60.8           38.9                3.6 +/-    1.50       5.3 +/-    1.50  0.070 / 0.060
G21     104.3          72.2                5.3 +/-    0.61       5.5 +/-    0.61  0.040 / 0.040
G24     95.1           27.4                4.4 +/-    1.40       8.2 +/-    1.40  0.040 / 0.030
G27     297.0          35.6                5.0 +/-    2.40       7.9 +/-    2.40  0.080 / 0.120
G32     211.5          35.9                5.3 +/-    1.84       8.3 +/-    1.84  0.070 / 0.120