PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/27-08:12:30
G10     247.1          23.4                6.3 +/-    1.88      12.7 +/-    1.88  0.110 / 0.260
G13     58.0           32.5                4.2 +/-    1.46       6.9 +/-    1.46  0.090 / 0.380
G15     92.9           57.2                6.8 +/-    1.04       8.0 +/-    1.04  0.040 / 0.040
G16     300.1          15.2                2.3 +/-    1.81       5.6 +/-    1.81  0.040 / 0.040
G20     16.9           67.3                3.3 +/-    0.65       3.5 +/-    0.65  0.030 / 0.040
G21     329.8          57.9                4.3 +/-    0.46       5.0 +/-    0.46  0.030 / 0.050
G26     271.1          17.2                6.8 +/-    2.34      16.0 +/-    2.34  0.100 / 0.100
G29     163.4          54.2                7.3 +/-    0.68       8.8 +/-    0.68  0.080 / 0.090