PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/20-06:58:00
G01     126.7          11.8                4.6 +/-    2.68      12.2 +/-    2.68  0.040 / 0.040
G07     57.4           68.9                5.6 +/-    0.75       6.0 +/-    0.75  0.050 / 0.040
G08     48.9           37.0                2.1 +/-    0.48       3.2 +/-    0.48  0.030 / 0.040
G09     174.4          31.1                7.1 +/-    1.32      12.2 +/-    1.32  0.030 / 0.040
G11     116.0          35.9                6.9 +/-    0.85      10.8 +/-    0.85  0.100 / 0.460
G13     320.9          12.4               -3.5 +/-   14.14      -9.3 +/-   14.14  0.080 / 0.360
G17     199.1          17.3                4.4 +/-    1.41      10.4 +/-    1.41  0.120 / 0.300
G18     101.3          16.8                5.9 +/-    1.66      14.0 +/-    1.66  0.110 / 0.350
G28     275.3          52.1                5.5 +/-    0.94       6.8 +/-    0.94  0.110 / 0.370
G30     331.1          59.6                3.9 +/-    1.13       4.4 +/-    1.13  0.110 / 0.350