PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/30-09:43:00
G10     297.8          51.8                5.5 +/-    0.73       6.8 +/-    0.73  0.050 / 0.110
G15     45.9           26.7                3.4 +/-    0.86       6.4 +/-    0.86  0.050 / 0.110
G20     63.4           34.2                3.1 +/-    0.50       5.1 +/-    0.50  0.040 / 0.040
G21     99.5           73.1                5.0 +/-    0.48       5.2 +/-    0.48  0.040 / 0.040
G24     97.3           26.7                6.7 +/-    0.55      12.5 +/-    0.55  0.060 / 0.090
G27     299.0          34.9                6.5 +/-    0.94      10.3 +/-    0.94  0.100 / 0.080
G32     210.7          33.9                5.8 +/-    1.28       9.4 +/-    1.28  0.040 / 0.040