PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/09-10:27:50
G01     272.7          42.0                5.6 +/-    2.80       7.8 +/-    2.80  0.040 / 0.050
G03     316.1          31.8                3.9 +/-    1.06       6.5 +/-    1.06  0.040 / 0.060
G10     128.3          17.4                5.1 +/-    1.03      11.9 +/-    1.03  0.060 / 0.060
G11     251.5          20.4                5.6 +/-    2.17      12.3 +/-    2.17  0.050 / 0.080
G14     41.4           50.9                4.3 +/-    0.96       5.3 +/-    0.96  0.090 / 0.120
G18     233.8          40.1                5.8 +/-    1.18       8.4 +/-    1.18  0.090 / 0.110
G22     314.8          53.5                4.5 +/-    0.97       5.4 +/-    0.97  0.040 / 0.070
G25     54.3           16.8                3.9 +/-    3.34       9.3 +/-    3.34  0.040 / 0.060
G31     62.1           75.6                4.9 +/-    0.31       5.1 +/-    0.31  0.160 / 0.320
G32     59.6           37.3                4.7 +/-    0.94       7.2 +/-    0.94  0.170 / 0.430