PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/27-03:13:00
G02     49.8           40.5                6.0 +/-    1.56       8.6 +/-    1.56  0.210 / 0.560
G05     84.5           68.0                6.3 +/-    0.48       6.8 +/-    0.48  0.160 / 0.580
G12     188.1          47.2               10.6 +/-    1.16      13.8 +/-    1.16  0.040 / 0.020
G20     212.4          13.6                8.8 +/-    3.14      22.6 +/-    3.14  0.040 / 0.020
G25     262.8          57.8               11.1 +/-    0.77      12.9 +/-    0.77  0.030 / 0.010
G29     319.5          42.1                9.0 +/-    0.96      12.6 +/-    0.96  0.030 / 0.010