PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/09-08:42:40
G10     286.0          47.4                4.5 +/-    3.12       5.8 +/-    3.12  0.070 / 0.100
G15     47.9           34.4                4.0 +/-    1.11       6.4 +/-    1.11  0.060 / 0.090
G20     51.8           45.1                4.2 +/-    0.85       5.6 +/-    0.85  0.080 / 0.140
G21     65.6           76.9                4.5 +/-    0.36       4.6 +/-    0.36  0.080 / 0.150
G24     106.1          23.0                5.0 +/-    1.13      10.3 +/-    1.13  0.060 / 0.060
G27     307.7          30.6                4.5 +/-    0.70       7.7 +/-    0.70  0.050 / 0.060
G29     168.5          14.8                5.3 +/-    2.59      13.2 +/-    2.59  0.050 / 0.040
G32     207.5          25.6                5.4 +/-    1.18      10.4 +/-    1.18  0.040 / 0.040