PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/27-00:57:50
G01     319.3          16.9                9.2 +/-    1.29      21.9 +/-    1.29  0.110 / 0.200
G08     257.1          13.8               12.9 +/-    1.64      33.0 +/-    1.64  0.140 / 0.180
G10     76.7           54.8               10.1 +/-    0.60      12.1 +/-    0.60  0.020 / 0.040
G11     303.2          23.7               10.0 +/-    1.21      20.2 +/-    1.21  0.030 / 0.030
G14     297.0          71.1               11.1 +/-    0.43      11.7 +/-    0.43  0.050 / 0.060
G18     100.5          30.1               11.9 +/-    0.34      20.9 +/-    0.34  0.050 / 0.060
G31     178.6          38.3               14.4 +/-    1.18      21.5 +/-    1.18  0.040 / 0.070
G32     355.8          69.9                9.6 +/-    0.28      10.1 +/-    0.28  0.050 / 0.070