PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/04-13:57:50
G02     254.7          76.7                6.5 +/-    1.34       6.7 +/-    1.34  0.160 / 0.300
G05     172.6          18.5                7.2 +/-    1.27      16.4 +/-    1.27  0.160 / 0.270
G06     39.9           52.2                5.0 +/-    0.52       6.2 +/-    0.52  0.040 / 0.050
G12     321.5          60.0                6.5 +/-    1.43       7.4 +/-    1.43  0.030 / 0.050
G17     76.2           17.5                6.1 +/-    0.73      14.2 +/-    0.73  0.090 / 0.120
G19     59.3           38.7                6.0 +/-    1.03       8.9 +/-    1.03  0.090 / 0.130
G24     236.4          31.0                7.1 +/-    2.07      12.1 +/-    2.07  0.070 / 0.190
G25     317.3          19.6                4.0 +/-    2.20       8.9 +/-    2.20  0.070 / 0.230