PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/13-08:58:10
G08     270.8          18.0                4.7 +/-    2.14      10.9 +/-    2.14  0.050 / 0.070
G10     60.0           58.7                3.6 +/-    0.85       4.2 +/-    0.85  0.060 / 0.070
G14     260.3          61.6                3.8 +/-    0.44       4.2 +/-    0.44  0.110 / 0.200
G18     313.0          30.5                5.7 +/-    2.33       9.8 +/-    2.33  0.110 / 0.210
G20     103.2          16.5                3.8 +/-    1.04       9.1 +/-    1.04  0.030 / 0.030
G21     154.7          16.1                3.3 +/-    1.66       8.0 +/-    1.66  0.030 / 0.040
G24     39.8           10.2                2.3 +/-    1.12       6.4 +/-    1.12  0.130 / 0.360
G27     231.8          16.1                4.4 +/-    2.18      10.8 +/-    2.18  0.180 / 0.320
G31     176.8          31.6                4.9 +/-    2.34       8.2 +/-    2.34  0.080 / 0.200
G32     344.0          73.9                3.9 +/-    0.67       4.0 +/-    0.67  0.120 / 0.200