PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-06:58:10
G10     306.3          54.4                5.0 +/-    0.72       5.9 +/-    0.72  0.160 / 0.430
G14     212.7          13.1                5.0 +/-    3.49      13.0 +/-    3.49  0.110 / 0.400
G15     45.6           22.8                3.2 +/-    2.21       6.6 +/-    2.21  0.070 / 0.060
G20     49.3           51.6                6.2 +/-    0.58       7.6 +/-    0.58  0.070 / 0.080
G21     112.3          70.3                7.8 +/-    0.80       8.3 +/-    0.80  0.040 / 0.050
G24     90.7           28.4                5.4 +/-    1.06       9.7 +/-    1.06  0.040 / 0.040
G27     293.1          36.6                6.5 +/-    3.28      10.1 +/-    3.28  0.110 / 0.120
G32     213.2          39.7                7.4 +/-    1.22      10.9 +/-    1.22  0.080 / 0.120