PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/30-22:57:50
G10     258.7          32.0               14.6 +/-    2.12      24.5 +/-    2.12  0.110 / 0.430
G13     47.4           25.8               11.1 +/-    1.44      21.2 +/-    1.44  0.140 / 0.370
G15     71.2           54.8               13.2 +/-    0.53      15.7 +/-    0.53  0.040 / 0.040
G16     289.5          13.3               10.2 +/-    2.05      26.4 +/-    2.05  0.040 / 0.030
G18     283.7          60.7               12.7 +/-    1.54      14.3 +/-    1.54  0.200 / 0.370
G20     49.4           40.3               11.7 +/-    1.82      16.9 +/-    1.82  0.230 / 0.360
G21     347.8          67.1               12.7 +/-    0.69      13.6 +/-    0.69  0.120 / 0.150
G26     262.3          11.6               14.8 +/-    2.34      39.7 +/-    2.34  0.130 / 0.120
G27     320.9          13.9                8.6 +/-    2.07      21.9 +/-    2.07  0.110 / 0.270
G29     165.5          36.6               14.1 +/-    1.41      21.7 +/-    1.41  0.120 / 0.240