PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/06-21:42:30
G02     204.2          38.9               18.8 +/-    1.01      27.8 +/-    1.01  0.050 / 0.130
G06     159.0          71.4               16.3 +/-    0.31      17.1 +/-    0.31  0.050 / 0.130
G12     308.3          15.8               11.3 +/-    1.12      27.5 +/-    1.12  0.060 / 0.070
G17     39.4           46.2               14.3 +/-    0.65      18.9 +/-    0.65  0.080 / 0.090
G19     9.4            62.8               14.8 +/-    0.58      16.5 +/-    0.58  0.170 / 0.320
G24     292.6          40.1               13.3 +/-    9.18      19.3 +/-    9.18  0.210 / 0.230
G28     103.6          32.8               15.5 +/-    0.78      25.7 +/-    0.78  0.030 / 0.030