PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/31-18:13:00
G10     246.5          22.4               13.3 +/-    2.98      27.7 +/-    2.98  0.040 / 0.050
G13     59.6           33.6               10.7 +/-    0.64      17.5 +/-    0.64  0.040 / 0.070
G15     95.2           57.3               13.0 +/-    0.68      15.2 +/-    0.68  0.040 / 0.060
G16     305.9          12.9                9.5 +/-    1.38      25.0 +/-    1.38  0.030 / 0.050
G18     263.0          53.8               12.9 +/-    0.95      15.5 +/-    0.95  0.130 / 0.310
G20     38.3           53.9               10.0 +/-    0.42      12.0 +/-    0.42  0.160 / 0.400
G21     331.8          59.2               11.1 +/-    0.86      12.7 +/-    0.86  0.060 / 0.130
G26     277.2          16.7               11.0 +/-    2.09      26.4 +/-    2.09  0.050 / 0.140
G29     160.1          48.9               13.9 +/-    2.20      17.8 +/-    2.20  0.110 / 0.320