PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/16-01:42:40
G01     319.2          16.9               11.3 +/-    1.58      26.8 +/-    1.58  0.040 / 0.030
G08     257.0          13.8               10.4 +/-    2.25      26.7 +/-    2.25  0.040 / 0.030
G10     76.7           54.8               10.3 +/-    0.87      12.3 +/-    0.87  0.170 / 0.230
G11     303.0          23.9               12.1 +/-    1.57      24.2 +/-    1.57  0.170 / 0.290
G14     297.3          71.2               11.1 +/-    0.39      11.7 +/-    0.39  0.040 / 0.040
G18     100.4          30.3               10.2 +/-    1.13      17.8 +/-    1.13  0.050 / 0.040
G31     178.1          38.8               13.4 +/-    1.13      19.9 +/-    1.13  0.050 / 0.050
G32     357.2          69.7               11.1 +/-    0.39      11.8 +/-    0.39  0.050 / 0.050