PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/24-13:57:40
G02     219.8          59.5                9.5 +/-    1.85      10.8 +/-    1.85  0.080 / 0.110
G06     50.4           70.5                9.3 +/-    0.41       9.8 +/-    0.41  0.050 / 0.090
G12     320.3          41.9                7.8 +/-    0.79      11.0 +/-    0.79  0.040 / 0.060
G17     61.0           28.8                7.5 +/-    3.31      13.4 +/-    3.31  0.050 / 0.050
G19     38.0           50.5                8.1 +/-    1.85      10.1 +/-    1.85  0.200 / 0.320
G24     257.3          41.0               10.3 +/-    3.58      14.8 +/-    3.58  0.160 / 0.360
G28     124.5          12.0                7.2 +/-    3.21      19.3 +/-    3.21  0.050 / 0.040