PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/25-00:28:10
G02     221.2          66.9               12.0 +/-    0.88      13.0 +/-    0.88  0.030 / 0.030
G06     47.9           69.3               10.2 +/-    0.32      10.8 +/-    0.32  0.030 / 0.020
G12     320.1          41.0               10.5 +/-    1.23      15.1 +/-    1.23  0.040 / 0.070
G17     59.5           32.6                8.7 +/-    1.78      14.4 +/-    1.78  0.030 / 0.070
G19     44.6           46.4               10.0 +/-    0.62      13.2 +/-    0.62  0.050 / 0.090
G24     258.3          40.0               13.2 +/-    3.38      19.2 +/-    3.38  0.090 / 0.090