PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/25-00:27:20
G02     220.7          66.5               12.9 +/-    0.90      13.9 +/-    0.90  0.040 / 0.060
G06     48.5           69.7               11.3 +/-    0.41      12.0 +/-    0.41  0.030 / 0.080
G12     320.0          40.5               11.2 +/-    0.81      16.1 +/-    0.81  0.050 / 0.050
G17     59.1           32.9               10.1 +/-    0.62      16.6 +/-    0.62  0.040 / 0.050
G19     44.1           46.7               10.2 +/-    0.59      13.4 +/-    0.59  0.060 / 0.100
G24     258.9          40.2               13.7 +/-    1.01      19.9 +/-    1.01  0.060 / 0.090