PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/17-17:43:10
G02     225.3          66.2               16.2 +/-    0.79      17.5 +/-    0.79  0.050 / 0.060
G06     44.6           66.0               12.5 +/-    0.47      13.6 +/-    0.47  0.050 / 0.050
G12     321.2          45.3               12.2 +/-    0.92      16.4 +/-    0.92  0.030 / 0.060
G17     66.7           24.4               11.8 +/-    0.80      23.3 +/-    0.80  0.040 / 0.050
G19     51.7           41.5               10.8 +/-    0.99      15.3 +/-    0.99  0.060 / 0.080
G24     255.9          38.7               14.9 +/-    2.40      22.2 +/-    2.40  0.050 / 0.080