PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/31-18:12:50
G02     11.0           70.3               14.4 +/-    0.71      15.2 +/-    0.71  0.070 / 0.090
G05     163.8          42.8               19.5 +/-    1.16      27.1 +/-    1.16  0.050 / 0.090
G06     46.1           29.3               11.4 +/-    0.57      20.2 +/-    0.57  0.140 / 0.370
G12     258.9          79.7               13.5 +/-    0.68      13.7 +/-    0.68  0.140 / 0.350
G19     87.7           17.9               14.8 +/-    1.78      34.4 +/-    1.78  0.030 / 0.030
G20     197.3          11.5               14.6 +/-   29.54      39.4 +/-   29.54  0.030 / 0.040
G24     220.5          14.4               15.2 +/-    4.91      38.3 +/-    4.91  0.030 / 0.050
G25     311.5          44.4               12.2 +/-    1.09      16.6 +/-    1.09  0.050 / 0.060
G29     297.0          19.2               11.7 +/-    1.43      26.2 +/-    1.43  0.060 / 0.180