PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/29-14:57:50
G10     299.5          52.8                4.9 +/-    1.90       6.0 +/-    1.90  0.110 / 0.430
G14     210.2          13.3                3.9 +/-    2.11      10.1 +/-    2.11  0.130 / 0.370
G15     46.1           27.9                4.6 +/-    1.51       8.4 +/-    1.51  0.040 / 0.030
G20     355.4          65.3                4.9 +/-    0.41       5.3 +/-    0.41  0.030 / 0.030
G21     105.4          69.7                6.0 +/-    0.75       6.4 +/-    0.75  0.050 / 0.040
G24     92.2           26.3                8.4 +/-    1.74      16.0 +/-    1.74  0.040 / 0.030
G27     301.9          32.9                3.6 +/-    1.31       6.0 +/-    1.31  0.150 / 0.170
G32     211.1          31.7                7.0 +/-    1.34      11.8 +/-    1.34  0.100 / 0.110