PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/11-22:12:30
G10     256.5          32.8               12.6 +/-    2.03      20.9 +/-    2.03  0.130 / 0.560
G13     47.7           24.8                7.9 +/-    1.02      15.5 +/-    1.02  0.130 / 0.440
G15     74.0           55.5                9.4 +/-    0.54      11.2 +/-    0.54  0.060 / 0.060
G16     289.4          15.0                7.8 +/-    1.90      19.5 +/-    1.90  0.050 / 0.050
G20     279.7          54.8               11.2 +/-    0.92      13.3 +/-    0.92  0.070 / 0.080
G21     341.9          64.0                8.8 +/-    0.59       9.6 +/-    0.59  0.070 / 0.110
G26     262.3          12.8               11.6 +/-    0.91      30.5 +/-    0.91  0.070 / 0.160
G29     165.1          42.7               11.7 +/-    1.01      16.3 +/-    1.01  0.060 / 0.170