PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/30-19:42:50
G10     254.7          30.3               10.7 +/-    2.49      18.6 +/-    2.49  0.040 / 0.040
G13     49.5           26.8                9.2 +/-    2.64      17.3 +/-    2.64  0.040 / 0.050
G15     84.4           59.2               10.2 +/-    0.85      11.6 +/-    0.85  0.110 / 0.550
G16     290.6          15.2                2.3 +/-    2.31       5.8 +/-    2.31  0.120 / 0.640
G20     276.4          53.7               10.5 +/-    3.04      12.6 +/-    3.04  0.110 / 0.170
G21     340.7          63.6               10.7 +/-    0.61      11.7 +/-    0.61  0.110 / 0.160
G26     263.6          13.6                8.2 +/-    1.52      21.0 +/-    1.52  0.040 / 0.030
G29     165.8          45.1               10.9 +/-    0.49      14.7 +/-    0.49  0.030 / 0.030