PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/17-19:27:40
G01     318.6          18.7               10.4 +/-    2.58      23.6 +/-    2.58  0.140 / 0.370
G08     256.7          12.6               14.7 +/-    2.20      38.6 +/-    2.20  0.160 / 0.380
G10     80.9           53.2                9.5 +/-    0.98      11.5 +/-    0.98  0.110 / 0.200
G11     302.8          23.2               10.4 +/-    2.69      21.2 +/-    2.69  0.130 / 0.270
G14     300.8          70.8               10.9 +/-    0.59      11.4 +/-    0.59  0.050 / 0.060
G18     103.4          26.8               11.2 +/-    2.52      21.1 +/-    2.52  0.050 / 0.070
G22     300.9          10.8                2.1 +/-   15.92       5.8 +/-   15.92  0.060 / 0.050
G31     177.4          41.8               17.3 +/-    1.19      24.4 +/-    1.19  0.060 / 0.050
G32     7.5            67.2               10.2 +/-    0.79      11.0 +/-    0.79  0.030 / 0.030