PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/30-09:12:30
G03     188.7          13.0                5.9 +/-    6.09      15.4 +/-    6.09  0.030 / 0.060
G07     304.1          45.7                4.0 +/-    1.43       5.4 +/-    1.43  0.030 / 0.070
G08     129.7          37.8                6.9 +/-    0.58      10.4 +/-    0.58  0.030 / 0.040
G09     312.9          78.0                3.9 +/-    0.92       4.0 +/-    0.92  0.030 / 0.040
G16     41.5           30.8                2.9 +/-    0.98       5.0 +/-    0.98  0.040 / 0.090
G23     139.0          70.5                4.9 +/-    0.79       5.2 +/-    0.79  0.040 / 0.080
G27     83.8           36.5                5.2 +/-    0.30       8.1 +/-    0.30  0.080 / 0.280
G30     281.3          17.8                5.3 +/-    1.82      12.3 +/-    1.82  0.090 / 0.220