PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/15-05:13:10
G01     317.9          20.7                6.5 +/-    1.88      14.2 +/-    1.88  0.200 / 0.280
G08     254.5          11.5                9.6 +/-    5.06      26.1 +/-    5.06  0.130 / 0.220
G10     84.9           51.2                7.2 +/-    1.03       9.0 +/-    1.03  0.200 / 0.280
G11     299.8          24.6                4.7 +/-    2.01       9.3 +/-    2.01  0.260 / 0.240
G14     300.7          70.0                6.3 +/-    0.87       6.6 +/-    0.87  0.040 / 0.050
G18     301.4          42.5                6.3 +/-    1.83       8.8 +/-    1.83  0.040 / 0.040
G20     103.3          39.6               10.2 +/-    0.66      14.9 +/-    0.66  0.070 / 0.130
G22     302.7          13.7                6.3 +/-    3.18      16.1 +/-    3.18  0.110 / 0.150
G31     172.8          47.7                8.2 +/-    1.00      10.6 +/-    1.00  0.250 / 0.280
G32     17.3           63.7                7.0 +/-    0.45       7.7 +/-    0.45  0.260 / 0.310