PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/09-07:12:30
G08     297.9          22.6                4.7 +/-    1.63       9.7 +/-    1.63  0.090 / 0.090
G10     1.1            62.6                3.3 +/-    0.62       3.7 +/-    0.62  0.140 / 0.100
G14     225.9          43.2                4.5 +/-    1.90       6.2 +/-    1.90  0.060 / 0.070
G20     59.5           54.3                4.2 +/-    0.52       5.1 +/-    0.52  0.060 / 0.050
G21     144.2          43.6                5.9 +/-    0.69       8.1 +/-    0.69  0.030 / 0.030
G24     59.5           26.7                3.6 +/-    1.44       6.7 +/-    1.44  0.040 / 0.030
G27     260.6          33.9                5.4 +/-    1.36       8.7 +/-    1.36  0.090 / 0.120
G32     236.2          60.1                5.4 +/-    1.73       6.1 +/-    1.73  0.060 / 0.130