PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/17-07:12:40
G01     99.3           27.7                4.0 +/-    1.10       7.3 +/-    1.10  0.030 / 0.030
G07     114.8          52.9                6.4 +/-    0.36       7.8 +/-    0.36  0.030 / 0.030
G08     41.7           16.6                2.2 +/-    2.11       5.2 +/-    2.11  0.060 / 0.120
G11     83.5           44.7                5.4 +/-    1.42       7.3 +/-    1.42  0.060 / 0.110
G13     304.1          33.2                3.5 +/-    2.27       5.8 +/-    2.27  0.030 / 0.040
G17     207.4          42.4                6.1 +/-    1.01       8.6 +/-    1.01  0.030 / 0.050
G19     209.5          20.1                5.3 +/-    1.45      11.5 +/-    1.45  0.050 / 0.070
G28     313.2          59.0                3.7 +/-    0.94       4.2 +/-    0.94  0.050 / 0.080
G30     36.3           80.5                4.3 +/-    0.77       4.3 +/-    0.77  0.290 / 0.270