PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/27-22:12:30
G03     215.4          59.8                9.7 +/-    0.83      11.0 +/-    0.83  0.080 / 0.300
G07     256.5          16.6                9.9 +/-    4.25      23.6 +/-    4.25  0.110 / 0.350
G09     310.1          28.5                7.6 +/-    0.91      13.8 +/-    0.91  0.040 / 0.060
G16     103.9          64.4               12.1 +/-    1.25      13.3 +/-    1.25  0.040 / 0.060
G22     189.8          43.5                9.9 +/-    1.79      13.7 +/-    1.79  0.030 / 0.050
G23     326.3          56.5                9.5 +/-    0.80      11.2 +/-    0.80  0.040 / 0.050
G26     57.4           47.2                7.8 +/-    0.78      10.2 +/-    0.78  0.050 / 0.070
G31     57.1           15.2                6.9 +/-    2.25      17.0 +/-    2.25  0.050 / 0.080