PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/29-11:13:00
G07     41.0           68.7                4.5 +/-    0.54       4.8 +/-    0.54  0.040 / 0.060
G08     54.8           42.4                4.1 +/-    1.52       5.8 +/-    1.52  0.060 / 0.060
G09     176.3          40.2                6.6 +/-    1.18       9.6 +/-    1.18  0.040 / 0.060
G11     122.1          30.7                5.5 +/-    1.17       9.5 +/-    1.17  0.030 / 0.060
G17     198.6          11.2               -0.9 +/-   17.17      -2.5 +/-   17.17  0.030 / 0.030
G23     161.1          15.1                5.5 +/-    3.53      13.7 +/-    3.53  0.030 / 0.040
G27     38.1           11.2                4.0 +/-    1.90      10.8 +/-    1.90  0.230 / 0.340
G28     267.6          49.6                4.8 +/-    1.13       6.2 +/-    1.13  0.170 / 0.280
G30     324.6          53.7                4.4 +/-    0.93       5.3 +/-    0.93  0.140 / 0.300