PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/28-16:12:50
G08     267.7          17.3                7.1 +/-    1.31      16.8 +/-    1.31  0.030 / 0.030
G10     63.2           58.2                6.2 +/-    0.47       7.2 +/-    0.47  0.040 / 0.040
G11     311.9          16.4                6.0 +/-    4.00      14.4 +/-    4.00  0.040 / 0.050
G14     269.1          66.1                6.5 +/-    0.37       7.1 +/-    0.37  0.040 / 0.040
G21     153.8          11.1                9.9 +/-    4.70      26.9 +/-    4.70  0.150 / 0.180
G27     229.8          14.5                7.4 +/-    1.90      18.6 +/-    1.90  0.170 / 0.200
G31     178.1          31.9                8.6 +/-    3.23      14.5 +/-    3.23  0.040 / 0.080
G32     344.6          73.3                6.2 +/-    0.69       6.5 +/-    0.69  0.050 / 0.110