PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/30-17:28:00
G02     275.2          80.1               12.6 +/-    0.79      12.7 +/-    0.79  0.100 / 0.200
G05     172.5          21.0               12.6 +/-    3.56      27.1 +/-    3.56  0.110 / 0.160
G06     40.1           49.5               11.3 +/-    0.65      14.3 +/-    0.65  0.170 / 0.110
G12     319.8          62.0               10.9 +/-    0.75      12.2 +/-    0.75  0.070 / 0.130
G17     80.3           14.4               11.1 +/-    2.19      28.1 +/-    2.19  0.040 / 0.030
G19     68.1           31.1               10.1 +/-    3.27      17.3 +/-    3.27  0.030 / 0.030
G24     237.8          29.5               13.3 +/-    1.50      23.5 +/-    1.50  0.030 / 0.030
G25     317.7          24.3               13.1 +/-    1.00      26.0 +/-    1.00  0.040 / 0.040