PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/13-22:57:30
G08     279.5          22.3               14.1 +/-    1.64      29.3 +/-    1.64  0.080 / 0.160
G10     32.1           62.7               13.7 +/-    0.51      15.2 +/-    0.51  0.070 / 0.160
G14     244.0          58.0               16.5 +/-    0.86      19.1 +/-    0.86  0.110 / 0.160
G18     78.1           44.2               14.9 +/-    0.79      20.3 +/-    0.79  0.070 / 0.190
G21     150.5          26.1               18.7 +/-    0.82      35.7 +/-    0.82  0.030 / 0.040
G24     47.5           20.4               12.4 +/-    0.90      27.0 +/-    0.90  0.030 / 0.070
G27     241.1          24.3               16.4 +/-    1.81      32.6 +/-    1.81  0.070 / 0.150
G31     183.3          14.3               24.5 +/-    2.18      61.9 +/-    2.18  0.080 / 0.190
G32     273.4          72.7               15.3 +/-    0.88      15.9 +/-    0.88  0.240 / 0.310