PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/13-08:42:40
G05     50.3           12.9                1.2 +/-    1.75       3.2 +/-    1.75  0.040 / 0.210
G10     238.2          14.3                3.4 +/-    1.95       8.5 +/-    1.95  0.100 / 0.160
G13     72.4           36.5                6.4 +/-    1.44      10.0 +/-    1.44  0.100 / 0.320
G15     116.6          54.1                8.2 +/-    0.55       9.9 +/-    0.55  0.090 / 0.300
G16     312.0          13.0                3.7 +/-    2.86       9.6 +/-    2.86  0.030 / 0.040
G20     13.6           71.6                5.2 +/-    0.57       5.5 +/-    0.57  0.040 / 0.040
G21     317.2          50.1                5.0 +/-    0.85       6.3 +/-    0.85  0.040 / 0.060
G26     283.7          20.2                5.0 +/-    2.87      10.9 +/-    2.87  0.040 / 0.050
G29     157.5          67.8                7.9 +/-    0.32       8.5 +/-    0.32  0.090 / 0.270