PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/18-12:42:40
G08     320.5          10.7              -12.2 +/-   25.80     -33.6 +/-   25.80  0.030 / 0.050
G10     309.0          55.1                1.8 +/-    1.11       2.2 +/-    1.11  0.030 / 0.040
G14     212.9          17.6                4.5 +/-    2.12      10.4 +/-    2.12  0.060 / 0.070
G15     45.4           19.9                1.5 +/-    0.68       3.4 +/-    0.68  0.050 / 0.090
G20     75.1           17.9                2.6 +/-    1.11       6.0 +/-    1.11  0.070 / 0.190
G21     118.0          66.2                2.6 +/-    0.88       2.8 +/-    0.88  0.100 / 0.270
G24     89.5           29.1                3.1 +/-    0.84       5.5 +/-    0.84  0.150 / 0.330
G27     290.0          37.3                4.9 +/-    1.66       7.4 +/-    1.66  0.110 / 0.460
G32     214.5          40.6                5.5 +/-    0.95       7.9 +/-    0.95  0.170 / 0.350