PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/11-00:42:40
G10     265.1          38.3                9.5 +/-    1.75      14.2 +/-    1.75  0.250 / 0.260
G13     42.5           18.9                8.3 +/-    3.29      18.8 +/-    3.29  0.160 / 0.230
G15     60.9           49.7                9.2 +/-    1.04      11.7 +/-    1.04  0.070 / 0.080
G16     281.9          13.0                8.3 +/-    1.49      21.5 +/-    1.49  0.070 / 0.090
G20     293.5          59.0                9.8 +/-    1.18      11.3 +/-    1.18  0.040 / 0.050
G21     357.3          70.1                9.4 +/-    0.58      10.0 +/-    0.58  0.040 / 0.050
G24     122.8          13.0               10.2 +/-    2.79      26.7 +/-    2.79  0.150 / 0.220
G27     320.0          16.5                6.7 +/-   11.48      16.0 +/-   11.48  0.350 / 0.450
G29     166.4          32.6                9.5 +/-    0.98      15.7 +/-    0.98  0.030 / 0.040