PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/25-09:43:00
G05     49.3           15.0                1.2 +/-    2.38       3.0 +/-    2.38  0.110 / 0.240
G10     236.6          12.4                2.8 +/-    1.84       7.5 +/-    1.84  0.110 / 0.240
G13     75.7           36.8                3.4 +/-    0.82       5.2 +/-    0.82  0.040 / 0.050
G15     120.5          52.8                5.7 +/-    0.77       7.0 +/-    0.77  0.040 / 0.040
G16     314.5          12.0                3.6 +/-    2.57       9.5 +/-    2.57  0.050 / 0.060
G20     16.9           71.4                3.7 +/-    0.73       3.9 +/-    0.73  0.040 / 0.060
G21     315.3          49.0                3.1 +/-    0.67       4.0 +/-    0.67  0.170 / 0.390
G25     199.8          10.6                1.2 +/-   17.65       3.3 +/-   17.65  0.130 / 0.340
G26     286.6          20.4                4.3 +/-    1.34       9.3 +/-    1.34  0.100 / 0.300
G29     155.4          70.1                5.3 +/-    0.73       5.6 +/-    0.73  0.130 / 0.350