PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/29-19:43:10
G10     253.4          29.3               11.6 +/-    2.45      20.7 +/-    2.45  0.040 / 0.040
G13     50.6           27.7                9.2 +/-    2.09      17.0 +/-    2.09  0.050 / 0.040
G15     87.5           59.5               10.6 +/-    0.95      12.0 +/-    0.95  0.110 / 0.330
G16     292.0          15.4                8.4 +/-    2.69      20.7 +/-    2.69  0.130 / 0.450
G20     274.4          52.9               10.4 +/-    3.17      12.6 +/-    3.17  0.160 / 0.210
G21     338.7          62.7               10.6 +/-    1.22      11.7 +/-    1.22  0.140 / 0.300
G26     264.9          14.2                8.5 +/-    1.05      21.6 +/-    1.05  0.030 / 0.040
G29     165.5          46.6               11.8 +/-    0.74      15.5 +/-    0.74  0.030 / 0.040