PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/12-11:28:10
G08     262.7          13.6                4.8 +/-    1.79      12.3 +/-    1.79  0.030 / 0.040
G10     78.1           54.0                4.2 +/-    0.70       5.1 +/-    0.70  0.030 / 0.030
G11     305.5          21.2                4.0 +/-    2.94       8.6 +/-    2.94  0.100 / 0.340
G14     285.9          68.2                5.1 +/-    1.06       5.5 +/-    1.06  0.120 / 0.320
G18     306.1          38.7                3.7 +/-    1.25       5.5 +/-    1.25  0.080 / 0.230
G22     301.3          13.8                4.2 +/-    2.85      10.8 +/-    2.85  0.080 / 0.280
G31     174.6          42.6                5.6 +/-    0.60       7.8 +/-    0.60  0.120 / 0.380
G32     9.2            67.2                4.3 +/-    0.41       4.6 +/-    0.41  0.100 / 0.260