PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/12-15:12:50
G01     321.0          10.5              -17.6 +/-   14.69     -48.6 +/-   14.69  0.160 / 0.230
G08     267.8          17.0                8.0 +/-    1.07      19.0 +/-    1.07  0.140 / 0.290
G10     64.4           57.9                6.9 +/-    0.85       8.0 +/-    0.85  0.200 / 0.280
G11     311.8          16.4                5.9 +/-    2.68      14.3 +/-    2.68  0.180 / 0.370
G14     269.8          66.1                8.0 +/-    0.57       8.7 +/-    0.57  0.060 / 0.080
G21     154.2          11.1                8.8 +/-    5.08      24.0 +/-    5.08  0.050 / 0.070
G27     229.4          14.2                7.6 +/-    1.49      19.4 +/-    1.49  0.040 / 0.050
G31     177.6          33.0                9.5 +/-    2.04      15.7 +/-    2.04  0.030 / 0.040
G32     347.7          72.8                7.5 +/-    0.36       7.8 +/-    0.36  0.170 / 0.230