PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/13-18:42:50
G10     252.0          28.2               12.6 +/-    1.66      22.9 +/-    1.66  0.040 / 0.050
G13     51.9           28.7               11.1 +/-    0.46      20.0 +/-    0.46  0.040 / 0.050
G15     89.8           59.4               11.7 +/-    0.66      13.3 +/-    0.66  0.130 / 0.730
G16     293.9          15.4                9.4 +/-    3.66      23.2 +/-    3.66  0.170 / 0.700
G20     272.1          51.9               11.7 +/-    1.01      14.5 +/-    1.01  0.070 / 0.180
G21     337.2          61.8               12.0 +/-    0.57      13.4 +/-    0.57  0.060 / 0.170
G26     266.8          14.9               10.6 +/-    1.82      26.4 +/-    1.82  0.030 / 0.050
G29     164.9          48.2               12.1 +/-    1.20      15.6 +/-    1.20  0.030 / 0.040