PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/18-01:43:10
G02     48.3           42.0                7.7 +/-    0.62      10.8 +/-    0.62  0.070 / 0.080
G05     89.0           68.5                8.8 +/-    0.60       9.4 +/-    0.60  0.060 / 0.060
G12     187.8          48.2               13.0 +/-    1.74      16.8 +/-    1.74  0.030 / 0.040
G25     265.4          58.0                8.6 +/-    0.94      10.0 +/-    0.94  0.030 / 0.040
G29     318.4          40.6               10.5 +/-    1.79      15.1 +/-    1.79  0.030 / 0.040