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          6.8225 +/-  0.5852   13.9284 +/-  0.5852  0.070 / 0.040
G10     354.4173       62.5292          4.1899 +/-  0.5614    4.6589 +/-  0.5614  0.030 / 0.030
G14     226.2601       43.9212          6.2435 +/-  2.2268    8.5455 +/-  2.2268  0.050 / 0.100
G18     54.4518        55.1509          4.2599 +/-  0.4583    5.0677 +/-  0.4583  0.040 / 0.090
G21     143.3223       45.3991          6.0599 +/-  0.7748    8.1198 +/-  0.7748  0.030 / 0.020
G24     62.0293        28.4072          3.5215 +/-  1.0763    6.3785 +/-  1.0763  0.030 / 0.020
G27     257.8658       33.7158          7.7855 +/-  0.9371   12.6582 +/-  0.9371  0.080 / 0.100
G32     237.5926       63.1049          7.1884 +/-  1.3425    7.9571 +/-  1.3425  0.120 / 0.090