PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/20-04:12:30
G08     296.5360       23.1155          7.3697 +/-  0.9308   15.0457 +/-  0.9308  0.030 / 0.030
G10     354.4173       62.5292          5.8733 +/-  0.7759    6.5308 +/-  0.7759  0.030 / 0.030
G14     226.2601       43.9212          8.6517 +/-  1.2435   11.8416 +/-  1.2435  0.090 / 0.100
G18     54.4518        55.1509          3.9970 +/-  0.4654    4.7549 +/-  0.4654  0.070 / 0.090
G21     143.3223       45.3991          8.1720 +/-  1.3858   10.9499 +/-  1.3858  0.080 / 0.160
G24     62.0293        28.4072          3.5813 +/-  0.9449    6.4869 +/-  0.9449  0.100 / 0.150
G27     257.8658       33.7158          7.1090 +/-  1.5741   11.5584 +/-  1.5741  0.050 / 0.090
G32     237.5926       63.1049          9.0069 +/-  0.7939    9.9701 +/-  0.7939  0.050 / 0.090