PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/13-19:58:00
G01     316.0          23.7                9.1 +/-    3.02      18.4 +/-    3.02  0.110 / 0.520
G10     89.8           49.6               10.2 +/-    0.72      12.9 +/-    0.72  0.140 / 0.400
G11     296.8          25.7               11.4 +/-    2.69      22.0 +/-    2.69  0.090 / 0.180
G14     321.0          71.0               10.5 +/-    0.77      11.0 +/-    0.77  0.090 / 0.180
G18     108.3          22.5               10.2 +/-    1.52      21.1 +/-    1.52  0.040 / 0.060
G22     303.9          15.1                9.1 +/-    4.24      22.7 +/-    4.24  0.050 / 0.070
G25     94.5           11.7               11.6 +/-    1.83      31.3 +/-    1.83  0.160 / 0.320
G31     176.1          48.5               12.3 +/-    1.91      15.7 +/-    1.91  0.190 / 0.460
G32     17.9           62.9                9.1 +/-    0.31      10.1 +/-    0.31  0.050 / 0.050