PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/17-22:57:40
G10     260.9          34.5               13.0 +/-    1.92      20.8 +/-    1.92  0.130 / 0.220
G13     45.0           22.5                7.7 +/-    2.05      16.0 +/-    2.05  0.140 / 0.300
G15     70.4           55.7               10.0 +/-    0.66      11.9 +/-    0.66  0.050 / 0.060
G16     282.9          14.2               12.2 +/-    2.04      30.9 +/-    2.04  0.060 / 0.050
G20     263.6          27.8               16.7 +/-    1.92      30.8 +/-    1.92  0.130 / 0.320
G21     348.0          67.3                7.4 +/-    1.09       8.0 +/-    1.09  0.140 / 0.300
G24     123.6          10.9                6.6 +/-   32.29      18.0 +/-   32.29  0.120 / 0.340
G26     256.1          10.6               13.5 +/-    2.34      37.1 +/-    2.34  0.110 / 0.410
G27     321.0          13.9               10.5 +/-    3.11      26.8 +/-    3.11  0.080 / 0.250
G29     167.6          38.7               11.7 +/-    1.00      17.4 +/-    1.00  0.090 / 0.240