PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/19-08:12:50
G05     49.4           14.8                2.1 +/-    2.58       5.3 +/-    2.58  0.170 / 0.270
G10     236.7          12.5                5.7 +/-    4.46      15.0 +/-    4.46  0.150 / 0.360
G13     75.5           36.7                8.2 +/-    1.34      12.6 +/-    1.34  0.040 / 0.050
G15     120.8          52.8                8.3 +/-    0.66      10.1 +/-    0.66  0.050 / 0.070
G16     313.9          12.4                2.9 +/-    2.07       7.6 +/-    2.07  0.130 / 0.200
G20     356.8          75.9                5.3 +/-    0.48       5.4 +/-    0.48  0.130 / 0.170
G21     314.6          48.3                4.4 +/-    0.70       5.7 +/-    0.70  0.030 / 0.040
G25     199.8          10.7                3.3 +/-    1.39       9.2 +/-    1.39  0.040 / 0.040
G26     286.1          20.5                7.4 +/-    1.29      16.2 +/-    1.29  0.390 / 0.240
G29     155.9          70.8                7.7 +/-    0.74       8.1 +/-    0.74  0.220 / 0.180