PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/25-21:58:10
G07     51.6           68.2                9.4 +/-    0.57      10.1 +/-    0.57  0.030 / 0.030
G08     52.8           41.0                7.9 +/-    0.74      11.3 +/-    0.74  0.030 / 0.040
G09     178.7          41.2               10.2 +/-    1.24      14.5 +/-    1.24  0.080 / 0.210
G11     120.9          33.5               11.5 +/-    0.91      18.8 +/-    0.91  0.080 / 0.230
G17     198.5          12.4                6.1 +/-   15.75      16.3 +/-   15.75  0.130 / 0.170
G18     104.1          14.5               10.5 +/-    2.19      26.3 +/-    2.19  0.160 / 0.170
G23     161.2          13.1                9.4 +/-    1.69      24.5 +/-    1.69  0.060 / 0.060
G27     38.5           12.8                7.0 +/-    1.75      18.3 +/-    1.75  0.070 / 0.050
G28     266.3          47.7               11.1 +/-    3.32      14.5 +/-    3.32  0.040 / 0.040
G30     327.9          57.1                9.2 +/-    0.58      10.8 +/-    0.58  0.050 / 0.040