PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/09-00:28:10
G10     259.1          32.3               14.5 +/-    1.47      24.2 +/-    1.47  0.040 / 0.050
G13     46.9           25.4               11.3 +/-    0.80      22.0 +/-    0.80  0.030 / 0.040
G15     71.6           55.3               12.1 +/-    0.53      14.4 +/-    0.53  0.200 / 0.420
G16     288.2          13.4               11.2 +/-    2.04      28.9 +/-    2.04  0.170 / 0.430
G18     283.6          60.4               12.4 +/-    0.90      14.1 +/-    0.90  0.060 / 0.120
G20     50.0           39.5               10.2 +/-    0.57      15.0 +/-    0.57  0.070 / 0.120
G21     347.2          67.0               10.3 +/-    0.76      11.0 +/-    0.76  0.040 / 0.080
G26     261.1          11.5               13.9 +/-    3.11      37.5 +/-    3.11  0.040 / 0.080
G27     320.7          14.2                8.6 +/-    2.96      21.7 +/-    2.96  0.110 / 0.210
G29     166.1          37.0               13.7 +/-    1.46      21.0 +/-    1.46  0.120 / 0.230