PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/25-04:28:00
G10     253.4          28.8               10.3 +/-    1.46      18.5 +/-    1.46  0.100 / 0.310
G13     50.9           28.2                5.8 +/-    2.01      10.6 +/-    2.01  0.110 / 0.330
G15     80.3           56.8                8.2 +/-    0.72       9.6 +/-    0.72  0.050 / 0.040
G16     291.6          15.4                8.1 +/-    1.77      19.9 +/-    1.77  0.040 / 0.030
G20     296.3          66.0                7.6 +/-    0.73       8.2 +/-    0.73  0.120 / 0.160
G21     337.1          62.1                7.2 +/-    0.96       8.0 +/-    0.96  0.200 / 0.140
G26     263.4          14.3                9.5 +/-    1.83      24.1 +/-    1.83  0.030 / 0.030
G29     166.0          46.9                8.7 +/-    0.62      11.4 +/-    0.62  0.040 / 0.040