PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/17-14:28:00
G02     335.6          80.0                5.5 +/-    0.71       5.5 +/-    0.71  0.050 / 0.090
G05     167.7          29.8                8.6 +/-    1.70      15.2 +/-    1.70  0.040 / 0.080
G06     40.7           44.3                3.9 +/-    1.05       5.4 +/-    1.05  0.080 / 0.200
G12     314.1          68.3                5.5 +/-    0.94       5.9 +/-    0.94  0.080 / 0.200
G17     85.9           10.5                6.1 +/-    2.19      16.9 +/-    2.19  0.030 / 0.040
G19     74.6           26.9                6.1 +/-    1.16      11.5 +/-    1.16  0.030 / 0.040
G24     231.4          24.5                6.2 +/-    1.49      12.2 +/-    1.49  0.070 / 0.340
G25     317.4          29.1                4.6 +/-    2.77       8.2 +/-    2.77  0.090 / 0.320
G29     286.9          11.9                6.5 +/-    2.43      17.3 +/-    2.43  0.110 / 0.140