PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/25-13:58:00
G08     278.1          20.2                1.8 +/-    2.16       4.0 +/-    2.16  0.150 / 0.150
G10     45.0           61.3                5.0 +/-    1.04       5.7 +/-    1.04  0.320 / 0.560
G14     250.4          59.2                6.8 +/-    1.01       7.8 +/-    1.01  0.030 / 0.050
G21     152.4          21.1                5.9 +/-    1.33      12.6 +/-    1.33  0.040 / 0.050
G24     43.6           16.1                4.2 +/-    2.70      10.2 +/-    2.70  0.110 / 0.200
G27     237.0          20.8                4.4 +/-    2.58       9.5 +/-    2.58  0.080 / 0.200
G31     179.3          23.2                5.6 +/-    2.03      11.4 +/-    2.03  0.110 / 0.170
G32     310.4          76.4                5.9 +/-    0.41       6.0 +/-    0.41  0.100 / 0.150