PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/17-22:42:50
G08     278.9          22.2               12.3 +/-    1.00      25.6 +/-    1.00  0.070 / 0.190
G10     33.5           62.6               11.7 +/-    0.76      13.0 +/-    0.76  0.100 / 0.180
G14     244.9          58.4               12.7 +/-    0.72      14.6 +/-    0.72  0.080 / 0.190
G18     78.9           43.8               10.7 +/-    0.79      14.6 +/-    0.79  0.080 / 0.220
G21     150.7          25.3               12.0 +/-    1.13      23.3 +/-    1.13  0.060 / 0.160
G24     47.1           20.0                9.3 +/-    0.98      20.5 +/-    0.98  0.070 / 0.130
G27     240.6          23.9               12.1 +/-    2.56      24.2 +/-    2.56  0.150 / 0.310
G31     183.4          14.7               14.6 +/-    1.93      36.6 +/-    1.93  0.170 / 0.230
G32     275.9          73.1               12.3 +/-    0.63      12.8 +/-    0.63  0.040 / 0.030