PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/14-07:27:40
G08     309.9          18.0                3.6 +/-    1.51       8.3 +/-    1.51  0.080 / 0.240
G10     336.1          60.6                2.4 +/-    0.83       2.7 +/-    0.83  0.120 / 0.240
G14     219.7          28.4                6.2 +/-    2.28      11.2 +/-    2.28  0.060 / 0.080
G20     67.6           42.2                4.3 +/-    0.62       6.0 +/-    0.62  0.070 / 0.080
G21     136.5          55.2                6.9 +/-    1.37       8.2 +/-    1.37  0.080 / 0.100
G24     71.1           29.7                3.9 +/-    0.55       7.0 +/-    0.55  0.080 / 0.090
G27     271.3          37.0                6.1 +/-    1.06       9.3 +/-    1.06  0.040 / 0.030
G32     225.6          56.4                8.3 +/-    0.72       9.8 +/-    0.72  0.040 / 0.030