PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/13-08:42:40
G02     356.8          76.6                5.4 +/-    0.31       5.5 +/-    0.31  0.070 / 0.080
G05     165.7          32.6                7.6 +/-    2.09      12.7 +/-    2.09  0.050 / 0.100
G06     41.2           39.6                4.2 +/-    0.82       6.2 +/-    0.82  0.030 / 0.020
G12     310.3          73.6                5.8 +/-    0.40       6.0 +/-    0.40  0.020 / 0.020
G17     86.1           10.3                7.6 +/-    5.57      21.1 +/-    5.57  0.080 / 0.120
G19     75.9           24.8                8.1 +/-    2.12      15.8 +/-    2.12  0.080 / 0.100
G24     229.3          22.6                6.1 +/-    2.94      12.7 +/-    2.94  0.030 / 0.030
G25     316.7          29.3                4.7 +/-    1.21       8.4 +/-    1.21  0.030 / 0.030