PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/13-21:58:10
G03     215.2          60.1               14.4 +/-    1.08      16.4 +/-    1.08  0.050 / 0.050
G07     254.9          13.5               14.4 +/-    3.21      37.2 +/-    3.21  0.040 / 0.060
G09     308.7          25.1               10.1 +/-    1.74      19.7 +/-    1.74  0.230 / 0.220
G16     108.8          64.9               14.2 +/-    0.26      15.5 +/-    0.26  0.130 / 0.240
G22     189.5          44.8               16.4 +/-    1.51      22.1 +/-    1.51  0.090 / 0.170
G23     327.7          57.5               11.4 +/-    0.83      13.2 +/-    0.83  0.050 / 0.150
G26     56.7           46.2                9.3 +/-    1.10      12.3 +/-    1.10  0.030 / 0.040
G31     57.5           12.8                6.8 +/-    0.92      17.9 +/-    0.92  0.030 / 0.030