PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/19-23:58:10
G02     356.5          76.2               11.6 +/-    0.49      11.9 +/-    0.49  0.020 / 0.030
G05     161.7          37.4               16.2 +/-    0.96      24.6 +/-    0.96  0.020 / 0.030
G06     42.7           36.7               10.3 +/-    1.11      15.8 +/-    1.11  0.050 / 0.070
G12     304.6          74.8               12.1 +/-    0.51      12.5 +/-    0.51  0.040 / 0.060
G17     87.5           12.1               12.7 +/-    1.88      33.8 +/-    1.88  0.100 / 0.110
G19     77.1           26.8               11.0 +/-    1.77      20.6 +/-    1.77  0.110 / 0.120
G24     225.8          20.5               17.3 +/-    3.19      37.7 +/-    3.19  0.040 / 0.070
G25     316.8          31.0               12.4 +/-    0.83      21.3 +/-    0.83  0.060 / 0.120