PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/17-15:42:40
G01     312.2          28.7                9.6 +/-    1.71      17.2 +/-    1.71  0.030 / 0.050
G10     98.7           45.0               10.3 +/-    0.94      13.9 +/-    0.94  0.040 / 0.050
G11     291.9          26.2                7.9 +/-    2.72      14.9 +/-    2.72  0.070 / 0.130
G14     335.9          69.6                9.3 +/-    1.09       9.8 +/-    1.09  0.060 / 0.110
G22     307.5          22.1                7.0 +/-    1.18      14.6 +/-    1.18  0.140 / 0.190
G25     89.2           14.5               10.7 +/-    1.36      26.9 +/-    1.36  0.120 / 0.200
G31     170.4          58.4               12.2 +/-    0.79      14.0 +/-    0.79  0.040 / 0.050
G32     29.6           56.6                6.6 +/-    0.64       7.7 +/-    0.64  0.050 / 0.060