PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/13-14:58:10
G08     272.1          18.7                6.4 +/-    1.12      14.6 +/-    1.12  0.120 / 0.110
G10     55.9           59.7                6.1 +/-    0.83       7.0 +/-    0.83  0.150 / 0.190
G11     314.7          13.5                4.3 +/-    2.41      11.1 +/-    2.41  0.070 / 0.090
G14     260.2          63.4                7.7 +/-    0.97       8.5 +/-    0.97  0.080 / 0.090
G21     153.5          15.4                7.7 +/-    3.26      18.9 +/-    3.26  0.130 / 0.330
G24     41.0           12.4                4.4 +/-    3.97      11.7 +/-    3.97  0.150 / 0.310
G27     232.7          17.2                6.1 +/-    2.32      14.4 +/-    2.32  0.070 / 0.060
G31     178.5          28.3                8.7 +/-    2.24      15.8 +/-    2.24  0.050 / 0.050
G32     332.4          75.0                6.6 +/-    0.42       6.8 +/-    0.42  0.030 / 0.030