PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/12-15:27:30
G01     319.6          16.2                6.3 +/-    2.24      15.1 +/-    2.24  0.050 / 0.050
G08     261.5          14.1                7.2 +/-    2.06      18.2 +/-    2.06  0.050 / 0.050
G10     76.1           54.7                6.7 +/-    0.69       8.0 +/-    0.69  0.040 / 0.040
G11     306.9          20.3                7.0 +/-    1.18      15.3 +/-    1.18  0.030 / 0.040
G14     287.4          69.2                8.3 +/-    0.49       8.9 +/-    0.49  0.150 / 0.380
G31     176.1          40.3                9.7 +/-    1.21      14.0 +/-    1.21  0.110 / 0.380
G32     4.8            68.5                6.4 +/-    0.58       6.8 +/-    0.58  0.030 / 0.030