PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/30-22:28:00
G10     247.0          22.6               16.7 +/-    2.31      34.5 +/-    2.31  0.040 / 0.050
G13     59.2           33.7               13.3 +/-    1.02      21.7 +/-    1.02  0.030 / 0.060
G15     97.5           58.0               15.7 +/-    0.18      18.2 +/-    0.18  0.160 / 0.360
G16     302.6          14.1                9.3 +/-    1.32      23.7 +/-    1.32  0.150 / 0.330
G18     262.5          52.8               15.5 +/-    0.81      18.9 +/-    0.81  0.100 / 0.320
G20     40.2           51.6               12.1 +/-    0.67      14.9 +/-    0.67  0.160 / 0.350
G21     329.0          57.8               12.8 +/-    0.63      14.9 +/-    0.63  0.090 / 0.180
G26     274.9          16.8               12.5 +/-    1.99      29.7 +/-    1.99  0.100 / 0.190
G29     162.0          51.5               14.7 +/-    0.98      18.2 +/-    0.98  0.050 / 0.120