PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-01:57:10
G02     50.5           40.1               10.9 +/-    1.61      15.8 +/-    1.61  0.030 / 0.050
G05     81.4           67.7               12.7 +/-    0.58      13.6 +/-    0.58  0.050 / 0.060
G12     187.1          45.4               16.4 +/-    0.56      22.0 +/-    0.56  0.030 / 0.030
G25     259.9          57.6               13.3 +/-    1.79      15.5 +/-    1.79  0.020 / 0.030
G29     320.1          42.9               13.8 +/-    0.88      19.2 +/-    0.88  0.040 / 0.050