PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/09-14:58:10
G01     64.3           31.5                9.0 +/-    0.92      15.2 +/-    0.92  0.080 / 0.150
G06     181.2          11.5               -4.7 +/-   36.06     -12.6 +/-   36.06  0.070 / 0.190
G07     140.0          23.0                8.5 +/-    2.38      17.5 +/-    2.38  0.080 / 0.110
G11     49.4           24.1                8.2 +/-    1.71      16.3 +/-    1.71  0.070 / 0.130
G13     270.0          36.0               10.3 +/-    0.98      16.1 +/-    0.98  0.080 / 0.110
G15     300.5          15.1                4.9 +/-    2.09      12.3 +/-    2.09  0.070 / 0.110
G17     250.1          76.2               11.1 +/-    0.33      11.4 +/-    0.33  0.030 / 0.030
G19     229.0          49.1              -23.9 +/-   53.69     -30.5 +/-   53.69  0.030 / 0.030
G28     29.2           57.7                6.9 +/-    3.54       8.0 +/-    3.54  0.040 / 0.080
G30     140.0          58.8               10.2 +/-    0.82      11.7 +/-    0.82  0.050 / 0.080