PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/23-00:57:30
G10     303.0          54.2                6.2 +/-    1.19       7.5 +/-    1.19  0.040 / 0.040
G14     210.6          13.3                7.5 +/-    2.26      19.5 +/-    2.26  0.040 / 0.040
G15     45.7           25.3                5.7 +/-    2.27      11.0 +/-    2.27  0.110 / 0.610
G20     357.7          65.0                7.3 +/-    0.72       8.0 +/-    0.72  0.120 / 0.430
G21     102.8          73.0                7.5 +/-    0.87       7.8 +/-    0.87  0.070 / 0.100
G24     95.6           27.6                6.5 +/-    1.50      12.0 +/-    1.50  0.080 / 0.100
G27     298.4          35.1                6.0 +/-    1.71       9.5 +/-    1.71  0.090 / 0.150
G32     211.5          33.4                8.0 +/-    1.52      13.1 +/-    1.52  0.230 / 0.120