PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/23-09:28:10
G10     272.9          41.2                5.5 +/-    1.29       7.9 +/-    1.29  0.100 / 0.140
G13     39.9           14.6                3.5 +/-    2.36       8.7 +/-    2.36  0.120 / 0.100
G15     53.5           43.3                5.6 +/-    1.18       7.8 +/-    1.18  0.040 / 0.050
G20     49.6           44.3                5.0 +/-    0.85       6.8 +/-    0.85  0.040 / 0.060
G21     22.3           75.1                5.5 +/-    0.65       5.7 +/-    0.65  0.040 / 0.040
G24     116.1          17.3                6.6 +/-    1.99      15.6 +/-    1.99  0.040 / 0.030
G27     315.4          23.7                4.6 +/-    1.19       9.2 +/-    1.19  0.060 / 0.060
G29     168.2          25.0                5.3 +/-    1.62      10.4 +/-    1.62  0.090 / 0.040
G32     205.0          15.2                4.5 +/-    2.55      11.0 +/-    2.55  0.260 / 0.460