PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/08-11:27:50
G07     331.3          57.3                2.9 +/-    0.85       3.4 +/-    0.85  0.050 / 0.050
G08     103.0          50.0                4.9 +/-    0.61       6.1 +/-    0.61  0.040 / 0.040
G09     189.9          76.6                4.7 +/-    1.02       4.8 +/-    1.02  0.040 / 0.080
G11     146.2          10.4               -4.4 +/-   15.75     -12.1 +/-   15.75  0.040 / 0.080
G16     45.3           12.2                1.5 +/-    1.54       4.0 +/-    1.54  0.100 / 0.130
G23     154.1          48.2                6.1 +/-    0.55       7.9 +/-    0.55  0.090 / 0.110
G27     58.6           32.9                2.8 +/-    0.88       4.6 +/-    0.88  0.180 / 0.310
G28     234.2          26.2              -32.8 +/-   57.99     -62.3 +/-   57.99  0.160 / 0.390
G30     297.2          30.2                2.1 +/-    1.25       3.7 +/-    1.25  0.030 / 0.060