PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/13-20:27:50
G01     306.8          33.3                8.7 +/-    1.94      14.3 +/-    1.94  0.080 / 0.190
G10     106.2          40.4               10.0 +/-    0.69      14.5 +/-    0.69  0.080 / 0.170
G11     282.2          28.2                9.0 +/-    0.58      16.3 +/-    0.58  0.080 / 0.120
G14     358.2          66.6                8.7 +/-    0.43       9.4 +/-    0.43  0.090 / 0.110
G18     117.8          12.6               11.8 +/-    1.58      30.9 +/-    1.58  0.020 / 0.030
G22     309.6          25.5                8.7 +/-    2.10      16.9 +/-    2.10  0.020 / 0.020
G25     81.5           16.7               10.9 +/-    1.23      26.1 +/-    1.23  0.040 / 0.030
G31     170.1          64.0               11.6 +/-    0.50      12.8 +/-    0.50  0.030 / 0.040
G32     35.4           53.0                8.7 +/-    1.09      10.6 +/-    1.09  0.060 / 0.130