PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/08-06:12:50
G02     61.4           30.5                1.8 +/-    1.82       3.1 +/-    1.82  0.090 / 0.090
G05     55.3           58.8                1.9 +/-    3.45       2.2 +/-    3.45  0.080 / 0.100
G12     185.9          33.1                4.3 +/-   30.69       7.0 +/-   30.69  0.040 / 0.060
G13     126.1          16.1                5.4 +/-   33.50      13.1 +/-   33.50  0.050 / 0.060
G15     162.2          14.0                2.8 +/-   31.99       7.1 +/-   31.99  0.030 / 0.040
G21     274.4          21.5                2.9 +/-   30.13       6.2 +/-   30.13  0.030 / 0.030
G25     230.5          50.4                4.1 +/-   31.08       5.1 +/-   31.08  0.030 / 0.040
G29     335.3          61.0                3.0 +/-    2.56       3.4 +/-    2.56  0.030 / 0.040