PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/13-00:58:10
G02     212.9          58.4               14.2 +/-    0.74      16.4 +/-    0.74  0.090 / 0.080
G06     68.8           77.2               12.2 +/-    0.31      12.5 +/-    0.31  0.080 / 0.140
G12     317.4          32.6               10.3 +/-    1.91      17.0 +/-    1.91  0.050 / 0.060
G19     34.6           51.9               12.6 +/-    1.81      15.5 +/-    1.81  0.070 / 0.060
G24     270.2          42.1               13.8 +/-    2.04      19.4 +/-    2.04  0.020 / 0.020
G28     120.6          15.7               14.1 +/-    1.08      34.6 +/-    1.08  0.030 / 0.020