PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/20-08:42:40
G02     24.8           63.0                4.0 +/-    0.67       4.5 +/-    0.67  0.030 / 0.040
G05     152.5          51.8                8.0 +/-    0.77       9.9 +/-    0.77  0.030 / 0.050
G06     47.0           28.3                1.7 +/-    0.96       3.1 +/-    0.96  0.230 / 0.360
G12     239.9          78.3                4.4 +/-    0.58       4.5 +/-    0.58  0.130 / 0.390
G19     91.2           16.1                6.2 +/-    1.75      15.0 +/-    1.75  0.110 / 0.240
G20     199.5          12.0               -0.6 +/-   15.40      -1.5 +/-   15.40  0.150 / 0.270
G24     216.7          10.8                3.7 +/-    2.39      10.0 +/-    2.39  0.020 / 0.020
G25     309.9          44.4                2.0 +/-    2.96       2.7 +/-    2.96  0.030 / 0.030
G29     300.3          22.0                3.1 +/-    1.17       6.6 +/-    1.17  0.050 / 0.090