PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/26-05:42:40
G10     293.7          50.5                5.9 +/-    0.98       7.4 +/-    0.98  0.040 / 0.040
G15     46.6           30.6                3.8 +/-    0.99       6.5 +/-    0.99  0.040 / 0.050
G20     24.0           61.8                4.5 +/-    0.48       5.0 +/-    0.48  0.050 / 0.090
G21     86.3           75.9                5.4 +/-    0.88       5.5 +/-    0.88  0.060 / 0.100
G24     99.7           25.5                5.5 +/-    0.95      10.6 +/-    0.95  0.040 / 0.050
G27     302.7          33.3                5.3 +/-    1.02       8.7 +/-    1.02  0.050 / 0.040
G29     168.6          10.3                6.4 +/-    1.46      17.8 +/-    1.46  0.070 / 0.090
G32     209.3          31.4                6.7 +/-    1.92      11.3 +/-    1.92  0.050 / 0.120