PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/27-21:42:40
G03     244.6          69.3               10.3 +/-    0.38      11.0 +/-    0.38  0.030 / 0.050
G09     302.7          18.2                8.5 +/-    1.63      19.6 +/-    1.63  0.030 / 0.050
G14     98.2           15.0               10.5 +/-    1.69      26.0 +/-    1.69  0.040 / 0.050
G16     132.9          56.7               14.1 +/-    1.07      16.5 +/-    1.07  0.040 / 0.050
G22     197.4          57.6               11.0 +/-    2.00      12.8 +/-    2.00  0.090 / 0.320
G23     316.1          45.5                9.6 +/-    1.09      12.9 +/-    1.09  0.090 / 0.310
G26     76.6           54.5               10.2 +/-    0.77      12.2 +/-    0.77  0.030 / 0.040
G31     49.9           25.2                8.6 +/-    0.80      16.8 +/-    0.80  0.040 / 0.040