PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/15-00:57:50
G08     278.5          22.3                9.7 +/-    1.09      20.3 +/-    1.09  0.100 / 0.190
G10     33.3           62.6               10.3 +/-    0.36      11.4 +/-    0.36  0.140 / 0.240
G14     245.1          58.8               11.8 +/-    0.84      13.6 +/-    0.84  0.030 / 0.020
G18     78.3           44.5               11.4 +/-    0.60      15.5 +/-    0.60  0.020 / 0.020
G21     150.9          26.6               11.7 +/-    2.63      22.0 +/-    2.63  0.170 / 0.110
G24     47.2           20.1                9.1 +/-    3.60      20.1 +/-    3.60  0.160 / 0.200
G27     240.5          23.9               13.0 +/-    2.71      26.1 +/-    2.71  0.140 / 0.140
G31     182.2          16.1               14.4 +/-    1.47      34.8 +/-    1.47  0.070 / 0.130
G32     276.7          73.4               12.1 +/-    0.40      12.6 +/-    0.40  0.040 / 0.060