PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/16-09:27:40
G05     50.2           13.4                2.1 +/-    2.60       5.5 +/-    2.60  0.230 / 0.280
G10     238.5          16.0                5.1 +/-    1.18      12.3 +/-    1.18  0.170 / 0.220
G13     70.5           35.3                4.2 +/-    1.18       6.6 +/-    1.18  0.060 / 0.090
G15     117.2          54.6                5.8 +/-    0.74       7.0 +/-    0.74  0.080 / 0.100
G16     314.6          11.2               -0.3 +/-    6.17      -0.8 +/-    6.17  0.070 / 0.040
G20     251.8          40.0                5.1 +/-    1.45       7.4 +/-    1.45  0.050 / 0.050
G21     322.1          53.2                3.7 +/-    0.70       4.4 +/-    0.70  0.030 / 0.030
G26     289.7          18.0                4.0 +/-    0.72       9.2 +/-    0.72  0.040 / 0.040
G29     154.0          63.6                6.1 +/-    0.60       6.7 +/-    0.60  0.080 / 0.150