PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/11-09:57:20
G10     296.4          51.9                5.7 +/-    2.27       7.0 +/-    2.27  0.030 / 0.040
G14     209.5          11.3               -5.5 +/-   12.59     -14.9 +/-   12.59  0.030 / 0.030
G15     46.2           28.3                3.0 +/-    1.41       5.4 +/-    1.41  0.080 / 0.060
G20     350.1          65.4                5.4 +/-    0.48       5.8 +/-    0.48  0.080 / 0.050
G21     99.0           71.5                5.2 +/-    0.58       5.5 +/-    0.58  0.090 / 0.170
G24     96.9           25.8                7.1 +/-    1.36      13.5 +/-    1.36  0.100 / 0.180
G27     303.8          32.3                5.3 +/-    1.23       8.8 +/-    1.23  0.270 / 0.420
G32     210.7          26.8                5.8 +/-    1.41      10.9 +/-    1.41  0.110 / 0.340