PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/10-08:57:50
G10     297.9          51.8                6.5 +/-    2.13       8.1 +/-    2.13  0.110 / 0.080
G15     45.9           26.8                2.4 +/-    2.13       4.5 +/-    2.13  0.090 / 0.090
G20     59.5           39.7                4.9 +/-    1.12       7.1 +/-    1.12  0.050 / 0.080
G21     99.0           73.4                7.2 +/-    0.62       7.5 +/-    0.62  0.060 / 0.080
G24     97.2           26.7                6.0 +/-    1.48      11.2 +/-    1.48  0.040 / 0.030
G27     299.1          34.9                6.4 +/-    1.47      10.2 +/-    1.47  0.040 / 0.040
G32     210.7          34.0                8.9 +/-    2.10      14.4 +/-    2.10  0.070 / 0.130