PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/27-15:28:00
G08     290.3          22.3                6.5 +/-    1.86      13.6 +/-    1.86  0.100 / 0.120
G10     16.2           63.2                6.2 +/-    0.48       6.8 +/-    0.48  0.080 / 0.120
G14     234.3          49.4                8.8 +/-    0.58      11.1 +/-    0.58  0.030 / 0.030
G21     147.8          32.7                9.3 +/-    0.78      15.4 +/-    0.78  0.030 / 0.030
G24     52.8           24.1                5.6 +/-    0.67      11.1 +/-    0.67  0.120 / 0.430
G27     248.5          29.0                5.1 +/-    1.78       9.2 +/-    1.78  0.190 / 0.260
G31     183.0          10.3               -4.1 +/-   19.69     -11.3 +/-   19.69  0.050 / 0.120
G32     257.3          71.4                7.5 +/-    0.79       7.9 +/-    0.79  0.050 / 0.130