PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/24-10:28:00
G10     250.1          25.8                4.1 +/-    1.62       7.9 +/-    1.62  0.040 / 0.050
G13     54.6           30.9                5.2 +/-    1.05       9.0 +/-    1.05  0.040 / 0.050
G15     84.9           56.6                5.7 +/-    0.58       6.7 +/-    0.58  0.040 / 0.060
G16     297.4          14.9                3.3 +/-    3.02       8.2 +/-    3.02  0.040 / 0.060
G20     37.1           54.8                4.7 +/-    0.32       5.7 +/-    0.32  0.120 / 0.480
G21     335.8          61.2                4.7 +/-    0.49       5.3 +/-    0.49  0.110 / 0.310
G26     268.3          15.8                5.5 +/-    2.82      13.4 +/-    2.82  0.060 / 0.130
G29     164.0          49.1                7.5 +/-    1.32       9.6 +/-    1.32  0.080 / 0.150