PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/27-08:43:10
G10     259.4          33.0                6.9 +/-    1.62      11.4 +/-    1.62  0.150 / 0.310
G13     46.3           24.3                3.0 +/-    1.45       6.0 +/-    1.45  0.110 / 0.310
G15     67.5           52.7                5.2 +/-    0.47       6.4 +/-    0.47  0.050 / 0.050
G16     286.4          13.9                3.7 +/-    1.32       9.5 +/-    1.32  0.040 / 0.050
G20     35.2           56.2                3.9 +/-    0.64       4.6 +/-    0.64  0.040 / 0.040
G21     349.4          67.5                2.3 +/-    0.78       2.5 +/-    0.78  0.040 / 0.050
G26     258.3          11.3                5.5 +/-    1.70      15.0 +/-    1.70  0.070 / 0.200
G27     321.1          13.6                2.1 +/-    2.53       5.5 +/-    2.53  0.070 / 0.210
G29     166.8          38.6                8.2 +/-    1.60      12.2 +/-    1.60  0.090 / 0.180