PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/14-23:12:20
G02     224.8          69.0               12.1 +/-    0.83      12.8 +/-    0.83  0.050 / 0.040
G06     45.0           66.1               11.6 +/-    0.53      12.5 +/-    0.53  0.040 / 0.050
G12     320.8          44.2               10.5 +/-    0.54      14.4 +/-    0.54  0.080 / 0.110
G17     62.4           30.1               10.9 +/-    1.67      19.0 +/-    1.67  0.100 / 0.100
G19     47.1           45.1               11.5 +/-    0.57      15.5 +/-    0.57  0.030 / 0.030
G24     254.6          39.0               13.8 +/-    1.29      20.4 +/-    1.29  0.030 / 0.030