PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/07-18:42:40
G08     265.8          18.6               11.8 +/-    1.67      26.8 +/-    1.67  0.050 / 0.050
G10     60.7           58.1               12.9 +/-    1.12      14.9 +/-    1.12  0.050 / 0.040
G11     311.2          17.8               12.7 +/-    2.13      29.5 +/-    2.13  0.120 / 0.270
G14     265.9          66.5               13.4 +/-    1.01      14.5 +/-    1.01  0.150 / 0.270
G20     94.8           36.9               12.6 +/-    1.03      19.2 +/-    1.03  0.260 / 0.240
G21     154.0          13.5               13.4 +/-    3.41      34.5 +/-    3.41  0.150 / 0.190
G27     234.5          17.0               11.6 +/-    1.38      27.5 +/-    1.38  0.030 / 0.030
G31     180.7          27.0               14.5 +/-    1.01      27.2 +/-    1.01  0.030 / 0.040
G32     333.7          74.6               13.2 +/-    0.42      13.6 +/-    0.42  0.100 / 0.150