PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/24-11:57:40
G10     295.0          50.7                2.9 +/-    0.73       3.6 +/-    0.73  0.040 / 0.050
G15     46.1           28.0                2.9 +/-    1.23       5.2 +/-    1.23  0.040 / 0.040
G20     68.1           24.2                4.7 +/-    0.89       9.5 +/-    0.89  0.050 / 0.080
G21     96.1           73.2                6.1 +/-    0.60       6.4 +/-    0.60  0.060 / 0.070
G24     99.7           26.0                7.3 +/-    0.94      13.9 +/-    0.94  0.070 / 0.160
G27     300.9          34.2                5.8 +/-    1.47       9.3 +/-    1.47  0.080 / 0.190
G32     210.1          31.5                3.7 +/-    0.91       6.3 +/-    0.91  0.040 / 0.040