PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/24-09:27:50
G08     263.5          16.7                7.4 +/-    4.34      17.6 +/-    4.34  0.030 / 0.040
G10     69.3           55.7                0.8 +/-    0.57       1.0 +/-    0.57  0.030 / 0.040
G11     308.3          20.0                6.2 +/-    2.30      13.6 +/-    2.30  0.200 / 0.450
G14     277.2          69.0                4.1 +/-    0.85       4.4 +/-    0.85  0.180 / 0.370
G18     309.4          36.9                4.8 +/-    1.99       7.4 +/-    1.99  0.200 / 0.340
G20     99.3           33.8                2.2 +/-    0.58       3.5 +/-    0.58  0.180 / 0.340
G21     155.1          10.4                3.3 +/-    1.72       9.0 +/-    1.72  0.030 / 0.060
G27     230.3          13.9                5.9 +/-    1.40      15.0 +/-    1.40  0.040 / 0.040
G31     177.9          33.8                5.1 +/-    1.98       8.3 +/-    1.98  0.120 / 0.280
G32     333.8          73.4                3.3 +/-    0.59       3.4 +/-    0.59  0.110 / 0.340