PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/31-06:27:50
G01     283.4          41.2                1.5 +/-    2.58       2.1 +/-    2.58  0.050 / 0.050
G03     313.3          19.2                3.7 +/-    1.43       8.3 +/-    1.43  0.050 / 0.060
G10     123.6          25.6                4.4 +/-    1.54       8.4 +/-    1.54  0.060 / 0.070
G11     256.7          25.3                7.1 +/-    6.58      13.8 +/-    6.58  0.070 / 0.070
G14     34.0           54.4                4.0 +/-    1.80       4.7 +/-    1.80  0.030 / 0.050
G22     314.6          44.0                5.5 +/-    1.27       7.5 +/-    1.27  0.040 / 0.070
G25     56.9           16.6                2.9 +/-    2.77       7.0 +/-    2.77  0.080 / 0.080
G26     154.6          16.6                7.2 +/-    4.15      17.1 +/-    4.15  0.090 / 0.130
G31     96.0           80.1                6.1 +/-    0.40       6.2 +/-    0.40  0.100 / 0.180
G32     55.2           39.3                4.0 +/-    1.03       5.9 +/-    1.03  0.080 / 0.180