PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/09-12:58:10
G10     294.7          50.6                4.4 +/-    2.60       5.5 +/-    2.60  0.050 / 0.090
G15     46.1           28.0                3.3 +/-    1.06       6.0 +/-    1.06  0.050 / 0.070
G20     68.3           23.6                3.1 +/-    2.18       6.2 +/-    2.18  0.110 / 0.150
G21     96.7           72.7                4.5 +/-    0.86       4.7 +/-    0.86  0.080 / 0.110
G24     100.0          25.9                5.4 +/-    1.18      10.3 +/-    1.18  0.040 / 0.040
G27     301.0          34.2                3.5 +/-    2.26       5.6 +/-    2.26  0.040 / 0.040
G32     210.1          31.1                3.8 +/-    1.74       6.6 +/-    1.74  0.120 / 0.050