PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/14-00:28:10
G02     206.2          46.1               13.0 +/-    0.72      17.2 +/-    0.72  0.120 / 0.080
G06     133.4          77.8               10.9 +/-    0.63      11.1 +/-    0.63  0.100 / 0.060
G12     312.5          22.6                7.9 +/-    0.85      16.4 +/-    0.85  0.030 / 0.010
G17     41.0           46.0                7.4 +/-    1.96       9.9 +/-    1.96  0.030 / 0.010
G19     18.0           59.6                9.9 +/-    0.89      11.3 +/-    0.89  0.050 / 0.030
G24     286.4          41.5                2.7 +/-    2.78       3.8 +/-    2.78  0.050 / 0.030
G28     111.5          24.2               11.5 +/-    1.76      22.8 +/-    1.76  0.100 / 0.160