PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/12-01:57:50
G01     319.4          16.5                8.0 +/-    2.09      19.3 +/-    2.09  0.030 / 0.030
G08     257.5          14.1                7.8 +/-    2.76      19.8 +/-    2.76  0.030 / 0.030
G10     75.7           55.1                8.9 +/-    0.45      10.6 +/-    0.45  0.130 / 0.270
G11     303.5          23.6                9.0 +/-    1.25      18.2 +/-    1.25  0.140 / 0.310
G14     295.4          71.1                8.3 +/-    0.51       8.8 +/-    0.51  0.040 / 0.070
G18     99.8           30.8                8.6 +/-    1.78      14.9 +/-    1.78  0.050 / 0.070
G31     178.1          38.3               11.4 +/-    1.23      17.0 +/-    1.23  0.040 / 0.040
G32     356.2          70.0                8.2 +/-    0.25       8.6 +/-    0.25  0.040 / 0.050