PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/16-15:57:30
G02     239.8          74.7               12.6 +/-    0.47      13.1 +/-    0.47  0.110 / 0.300
G05     175.1          13.4               20.4 +/-    2.00      52.8 +/-    2.00  0.120 / 0.270
G06     40.7           59.3               11.7 +/-    0.38      13.4 +/-    0.38  0.090 / 0.140
G12     321.6          51.9               11.5 +/-    0.56      14.1 +/-    0.56  0.090 / 0.110
G17     72.8           19.9               10.8 +/-    1.70      23.8 +/-    1.70  0.030 / 0.040
G19     59.2           36.9                9.8 +/-    0.84      15.1 +/-    0.84  0.040 / 0.040
G24     247.1          35.0               13.2 +/-    2.27      20.9 +/-    2.27  0.220 / 0.220
G25     316.9          15.4                7.0 +/-    3.05      17.2 +/-    3.05  0.150 / 0.200