PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/30-21:28:00
G10     246.2          23.1               14.8 +/-    1.61      30.3 +/-    1.61  0.030 / 0.050
G13     58.6           32.4               10.5 +/-    1.56      17.5 +/-    1.56  0.030 / 0.040
G15     105.1          59.0               11.6 +/-    0.90      13.3 +/-    0.90  0.170 / 0.430
G16     299.1          16.2               10.6 +/-    1.44      25.6 +/-    1.44  0.180 / 0.410
G20     248.7          10.1                6.1 +/-    3.41      16.9 +/-    3.41  0.060 / 0.120
G21     326.2          55.6               11.4 +/-    0.52      13.5 +/-    0.52  0.060 / 0.130
G26     271.3          17.7               13.7 +/-    1.53      31.8 +/-    1.53  0.030 / 0.030
G29     163.6          57.4               12.3 +/-    0.34      14.3 +/-    0.34  0.030 / 0.030