PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/27-22:43:00
G10     244.4          22.8               13.6 +/-    2.06      28.0 +/-    2.06  0.040 / 0.050
G13     60.4           32.4                8.8 +/-    1.74      14.7 +/-    1.74  0.050 / 0.060
G15     101.6          57.5               12.1 +/-    0.80      14.1 +/-    0.80  0.060 / 0.120
G16     303.6          15.1                8.6 +/-    1.30      21.2 +/-    1.30  0.060 / 0.160
G20     260.5          45.4               12.5 +/-    2.81      16.7 +/-    2.81  0.030 / 0.040
G21     324.9          54.3               11.3 +/-    0.58      13.6 +/-    0.58  0.030 / 0.030
G26     275.8          18.0               12.1 +/-    1.28      27.9 +/-    1.28  0.150 / 0.170
G29     160.3          58.2               12.3 +/-    0.67      14.2 +/-    0.67  0.150 / 0.170