PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/31-22:27:50
G10     248.4          24.0               18.7 +/-    1.20      37.5 +/-    1.20  0.070 / 0.130
G13     57.3           32.8               13.5 +/-    1.31      22.4 +/-    1.31  0.070 / 0.120
G15     93.5           58.0               17.6 +/-    0.61      20.3 +/-    0.61  0.150 / 0.350
G16     300.9          14.2                9.7 +/-    2.43      24.5 +/-    2.43  0.100 / 0.380
G18     265.0          54.0               15.8 +/-    2.56      19.1 +/-    2.56  0.030 / 0.040
G20     41.5           50.0               13.6 +/-    0.93      17.2 +/-    0.93  0.040 / 0.040
G21     331.2          59.1               13.5 +/-    0.63      15.5 +/-    0.63  0.050 / 0.080
G26     273.2          16.2               15.0 +/-    1.67      36.1 +/-    1.67  0.070 / 0.080
G29     162.6          49.4               17.3 +/-    0.64      22.0 +/-    0.64  0.040 / 0.050