PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/21-00:12:40
G01     304.9          34.5                9.9 +/-    1.10      15.9 +/-    1.10  0.090 / 0.150
G10     108.1          39.2                9.9 +/-    1.24      14.5 +/-    1.24  0.050 / 0.130
G11     278.4          28.9                9.2 +/-    0.79      16.5 +/-    0.79  0.050 / 0.080
G14     4.5            65.3                7.8 +/-    0.86       8.5 +/-    0.86  0.050 / 0.090
G18     118.7          12.3               10.2 +/-    4.42      27.2 +/-    4.42  0.030 / 0.040
G22     310.1          26.7                7.5 +/-    1.73      14.2 +/-    1.73  0.030 / 0.040
G25     78.1           16.9                9.3 +/-    1.82      22.2 +/-    1.82  0.040 / 0.040
G31     172.8          64.3               10.8 +/-    1.07      11.9 +/-    1.07  0.020 / 0.050
G32     35.3           53.2                7.5 +/-    0.37       9.2 +/-    0.37  0.110 / 0.260