PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/12-16:12:30
G01     309.0          31.7                7.4 +/-    1.92      12.5 +/-    1.92  0.020 / 0.040
G10     103.6          42.0                8.4 +/-    0.76      11.9 +/-    0.76  0.040 / 0.040
G11     287.0          27.0                7.8 +/-    1.54      14.7 +/-    1.54  0.070 / 0.170
G14     348.0          68.2                6.6 +/-    0.86       7.1 +/-    0.86  0.080 / 0.170
G22     309.2          25.3                8.2 +/-    2.22      16.0 +/-    2.22  0.060 / 0.220
G25     85.0           16.1                8.5 +/-    1.25      20.6 +/-    1.25  0.090 / 0.250
G31     167.7          63.1                9.9 +/-    0.62      10.9 +/-    0.62  0.040 / 0.050
G32     34.5           53.5                7.5 +/-    0.47       9.0 +/-    0.47  0.050 / 0.050