PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/12-15:28:10
G01     319.5          16.5                6.2 +/-    2.32      14.9 +/-    2.32  0.050 / 0.060
G08     261.1          13.9                6.9 +/-    0.79      17.7 +/-    0.79  0.040 / 0.060
G10     76.9           54.5                6.5 +/-    0.75       7.8 +/-    0.75  0.150 / 0.400
G11     306.5          20.5                8.4 +/-    2.76      18.3 +/-    2.76  0.040 / 0.050
G14     288.7          69.3                7.8 +/-    0.62       8.3 +/-    0.62  0.030 / 0.050
G22     300.1          10.5               -0.9 +/-    8.48      -2.4 +/-    8.48  0.140 / 0.220
G31     176.0          40.8               10.9 +/-    1.03      15.6 +/-    1.03  0.120 / 0.210
G32     5.7            68.2                7.9 +/-    0.46       8.5 +/-    0.46  0.040 / 0.040