PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/21-01:27:50
G01     320.0          16.3              -21.7 +/-   21.06     -52.2 +/-   21.06  0.110 / 0.240
G08     265.1          15.2                8.2 +/-    2.29      20.2 +/-    2.29  0.040 / 0.060
G10     75.1           53.6                7.1 +/-    0.45       8.6 +/-    0.45  0.050 / 0.050
G11     307.1          20.3                8.1 +/-    2.14      17.8 +/-    2.14  0.130 / 0.320
G14     281.1          68.7                7.4 +/-    0.36       7.8 +/-    0.36  0.160 / 0.290
G18     307.8          38.3                7.4 +/-    1.31      11.0 +/-    1.31  0.140 / 0.370
G20     102.5          31.4                7.6 +/-    1.21      12.9 +/-    1.21  0.110 / 0.370
G27     226.9          11.6                8.9 +/-    2.01      24.0 +/-    2.01  0.160 / 0.300
G31     175.4          39.0                9.8 +/-    1.04      14.5 +/-    1.04  0.120 / 0.290
G32     358.6          70.4                6.9 +/-    0.76       7.3 +/-    0.76  0.070 / 0.090