PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/19-23:13:20
G02     246.8          77.5               14.3 +/-    0.67      14.6 +/-    0.67  0.090 / 0.110
G05     170.3          18.1               23.3 +/-    1.47      53.6 +/-    1.47  0.080 / 0.100
G06     40.5           56.2               13.9 +/-    0.59      16.4 +/-    0.59  0.060 / 0.050
G12     321.7          54.1               14.2 +/-    1.18      17.0 +/-    1.18  0.050 / 0.050
G17     70.7           24.0               13.2 +/-    0.75      26.3 +/-    0.75  0.060 / 0.200
G19     57.4           39.1               13.5 +/-    0.56      19.9 +/-    0.56  0.050 / 0.200
G24     243.5          34.0               18.5 +/-    1.06      30.0 +/-    1.06  0.040 / 0.040
G25     316.9          12.9               10.5 +/-    3.31      27.4 +/-    3.31  0.030 / 0.040