PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/04-23:57:30
G08     268.7          19.3               15.1 +/-    1.67      33.8 +/-    1.67  0.100 / 0.230
G10     54.4           60.1               14.2 +/-    0.72      16.1 +/-    0.72  0.150 / 0.220
G11     312.6          16.4               14.3 +/-    4.35      34.4 +/-    4.35  0.050 / 0.050
G14     262.8          65.7               14.3 +/-    0.63      15.6 +/-    0.63  0.050 / 0.060
G18     89.1           38.0               15.6 +/-    0.88      23.5 +/-    0.88  0.070 / 0.160
G21     153.3          16.2               14.6 +/-    1.99      35.4 +/-    1.99  0.090 / 0.150
G24     41.5           13.4               11.7 +/-    1.15      30.2 +/-    1.15  0.110 / 0.160
G27     232.6          17.3               18.2 +/-    2.44      42.9 +/-    2.44  0.060 / 0.150
G31     181.0          24.9               18.2 +/-    1.24      35.5 +/-    1.24  0.030 / 0.040