PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/22-10:28:10
G08     270.2          17.2                4.9 +/-    2.08      11.6 +/-    2.08  0.050 / 0.060
G10     63.3           58.0                3.9 +/-    0.35       4.6 +/-    0.35  0.050 / 0.060
G11     311.8          16.6                3.4 +/-    2.46       8.2 +/-    2.46  0.110 / 0.170
G14     264.8          63.6                4.2 +/-    0.43       4.6 +/-    0.43  0.170 / 0.140
G18     312.1          31.9                5.3 +/-    1.95       9.0 +/-    1.95  0.030 / 0.030
G21     154.8          13.9                4.8 +/-    3.51      12.3 +/-    3.51  0.030 / 0.040
G27     230.3          14.8                4.8 +/-    1.05      11.9 +/-    1.05  0.190 / 0.410
G31     176.6          33.4                4.9 +/-    1.71       8.0 +/-    1.71  0.140 / 0.320
G32     349.1          72.9                4.0 +/-    0.47       4.2 +/-    0.47  0.150 / 0.450