PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/07-09:42:20
G02     279.5          80.6                5.7 +/-    0.66       5.7 +/-    0.66  0.030 / 0.030
G05     170.0          22.6                5.6 +/-    5.64      11.7 +/-    5.64  0.030 / 0.030
G06     39.4           51.2                5.0 +/-    0.51       6.2 +/-    0.51  0.130 / 0.210
G12     320.1          60.4                4.7 +/-    1.23       5.3 +/-    1.23  0.220 / 0.200
G17     79.0           15.0                5.2 +/-    1.49      13.0 +/-    1.49  0.080 / 0.090
G19     63.8           35.3                6.5 +/-    1.66      10.3 +/-    1.66  0.080 / 0.070
G25     317.3          25.4                4.2 +/-    1.93       8.1 +/-    1.93  0.110 / 0.180