PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/26-00:57:50
G02     259.4          80.0               11.4 +/-    0.43      11.6 +/-    0.43  0.040 / 0.060
G05     169.1          20.6               16.4 +/-    1.21      35.5 +/-    1.21  0.040 / 0.050
G06     40.0           54.2               10.1 +/-    0.70      12.1 +/-    0.70  0.060 / 0.210
G12     321.3          55.9               10.0 +/-    1.60      11.8 +/-    1.60  0.050 / 0.140
G17     72.3           23.6               11.6 +/-    0.43      23.4 +/-    0.43  0.110 / 0.280
G19     60.5           37.0               11.3 +/-    0.98      17.3 +/-    0.98  0.190 / 0.350
G24     241.2          32.5               13.6 +/-    0.97      22.7 +/-    0.97  0.120 / 0.140
G25     317.3          14.9                8.8 +/-    2.15      22.0 +/-    2.15  0.110 / 0.130