PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/27-05:57:40
G01     307.4          32.9                3.6 +/-    0.91       5.9 +/-    0.91  0.060 / 0.040
G10     104.8          41.7                4.3 +/-    0.39       6.1 +/-    0.39  0.070 / 0.030
G11     280.0          29.9                4.4 +/-    2.41       7.8 +/-    2.41  0.040 / 0.030
G14     359.6          66.6                2.5 +/-    0.99       2.7 +/-    0.99  0.040 / 0.020
G18     116.2          16.7                3.5 +/-    2.64       8.4 +/-    2.64  0.040 / 0.050
G22     309.4          26.2                0.6 +/-    1.68       1.1 +/-    1.68  0.040 / 0.050
G25     78.3           15.6                2.8 +/-    1.04       7.0 +/-    1.04  0.070 / 0.130
G31     167.4          64.2                6.0 +/-    0.81       6.6 +/-    0.81  0.070 / 0.140
G32     34.3           53.7                2.9 +/-    0.33       3.5 +/-    0.33  0.090 / 0.200