PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/30-16:57:30
G02     230.2          70.0               14.2 +/-    1.05      15.0 +/-    1.05  0.060 / 0.100
G06     42.4           63.1               11.5 +/-    0.78      12.7 +/-    0.78  0.060 / 0.120
G12     321.5          48.1               11.1 +/-    1.17      14.4 +/-    1.17  0.030 / 0.060
G17     69.3           22.4                9.4 +/-    0.90      19.5 +/-    0.90  0.030 / 0.050
G19     55.0           39.5               10.5 +/-    0.58      15.5 +/-    0.58  0.170 / 0.390
G24     252.0          37.3               13.7 +/-    1.00      20.9 +/-    1.00  0.180 / 0.350
G25     316.2          12.4               12.4 +/-    2.04      32.9 +/-    2.04  0.040 / 0.060