PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/11-08:43:00
G10     256.2          32.0                6.3 +/-    1.79      10.5 +/-    1.79  0.040 / 0.040
G13     48.2           25.5                4.5 +/-    1.86       8.8 +/-    1.86  0.040 / 0.040
G15     73.2           54.8                4.6 +/-    0.64       5.4 +/-    0.64  0.120 / 0.100
G16     295.1          13.4                3.3 +/-    1.84       8.5 +/-    1.84  0.080 / 0.090
G20     279.3          54.9                6.8 +/-    3.35       8.1 +/-    3.35  0.100 / 0.340
G21     350.1          66.7                5.1 +/-    0.62       5.5 +/-    0.62  0.080 / 0.270
G26     266.9          12.7                5.3 +/-    2.37      13.9 +/-    2.37  0.140 / 0.160
G29     162.9          37.9                5.1 +/-    0.73       7.6 +/-    0.73  0.210 / 0.160