PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/18-18:28:00
G02     302.8          80.7               15.8 +/-    0.71      16.0 +/-    0.71  0.080 / 0.140
G05     170.1          26.1               18.1 +/-    1.83      34.5 +/-    1.83  0.090 / 0.150
G06     40.9           44.4               12.3 +/-    0.90      16.7 +/-    0.90  0.080 / 0.180
G12     316.4          67.5               13.9 +/-    1.44      14.9 +/-    1.44  0.070 / 0.180
G17     84.2           11.5               12.8 +/-    2.15      34.5 +/-    2.15  0.030 / 0.050
G19     72.7           28.1               12.9 +/-    0.68      23.6 +/-    0.68  0.030 / 0.050
G24     233.5          26.2               19.4 +/-    1.48      36.8 +/-    1.48  0.060 / 0.120
G25     317.5          29.3               13.5 +/-    2.23      24.0 +/-    2.23  0.040 / 0.120