PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/27-09:57:40
G10     299.6          52.4                4.2 +/-    1.39       5.1 +/-    1.39  0.280 / 0.410
G14     211.3          10.9               -6.9 +/-    8.60     -18.8 +/-    8.60  0.060 / 0.110
G15     45.7           25.5                4.1 +/-    2.07       8.0 +/-    2.07  0.070 / 0.110
G20     65.3           31.9                3.6 +/-    1.78       6.1 +/-    1.78  0.040 / 0.040
G21     103.2          72.2                5.6 +/-    1.06       5.8 +/-    1.06  0.030 / 0.040
G24     96.0           27.2                5.0 +/-    2.01       9.2 +/-    2.01  0.080 / 0.090
G27     297.6          35.4                6.4 +/-    2.06      10.2 +/-    2.06  0.130 / 0.070
G32     211.3          35.1                7.3 +/-    2.29      11.6 +/-    2.29  0.050 / 0.040