PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/19-14:58:10
G02     252.5          75.7                5.4 +/-    0.78       5.6 +/-    0.78  0.080 / 0.180
G05     172.0          18.9                8.9 +/-    1.75      20.0 +/-    1.75  0.090 / 0.240
G06     40.0           52.1                5.0 +/-    0.46       6.1 +/-    0.46  0.080 / 0.150
G12     321.7          60.6                5.6 +/-    1.07       6.4 +/-    1.07  0.070 / 0.160
G17     75.9           17.9                4.9 +/-    0.65      11.3 +/-    0.65  0.030 / 0.040
G19     58.8           39.2                5.0 +/-    0.44       7.3 +/-    0.44  0.040 / 0.050
G24     237.0          31.2                7.5 +/-    1.12      12.9 +/-    1.12  0.090 / 0.200
G25     317.3          18.9                4.7 +/-    2.77      10.7 +/-    2.77  0.110 / 0.220