PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-14:57:50
G01     318.0          20.2                6.7 +/-    1.45      14.6 +/-    1.45  0.050 / 0.060
G08     257.6          11.7                4.8 +/-    1.68      13.0 +/-    1.68  0.040 / 0.050
G10     83.8           52.0                6.2 +/-    0.62       7.6 +/-    0.62  0.040 / 0.060
G11     303.0          22.4                5.2 +/-    1.97      10.9 +/-    1.97  0.040 / 0.050
G14     301.4          70.2                6.3 +/-    0.62       6.7 +/-    0.62  0.120 / 0.270
G22     302.5          14.1                6.4 +/-    2.71      16.3 +/-    2.71  0.120 / 0.270
G31     174.6          46.0                8.6 +/-    0.80      11.5 +/-    0.80  0.040 / 0.030
G32     14.4           64.8                5.0 +/-    0.71       5.4 +/-    0.71  0.040 / 0.040