PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/24-14:27:50
G08     319.1          12.2                2.5 +/-    1.32       6.7 +/-    1.32  0.060 / 0.070
G10     310.8          55.5                3.1 +/-    0.65       3.7 +/-    0.65  0.050 / 0.060
G14     213.3          19.4                6.2 +/-    2.24      13.8 +/-    2.24  0.030 / 0.030
G15     45.5           18.7                2.6 +/-    0.56       5.8 +/-    0.56  0.030 / 0.030
G20     76.5           16.1                3.9 +/-    2.04       9.5 +/-    2.04  0.110 / 0.420
G21     120.6          63.9                5.6 +/-    0.52       6.1 +/-    0.52  0.090 / 0.400
G24     88.3           29.4                4.7 +/-    1.15       8.4 +/-    1.15  0.030 / 0.050
G27     288.4          37.5                4.0 +/-    0.77       6.1 +/-    0.77  0.030 / 0.040
G32     215.3          41.2                6.5 +/-    0.97       9.3 +/-    0.97  0.080 / 0.100