PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/11-20:57:50
G02     20.8           64.6                9.9 +/-    0.58      10.9 +/-    0.58  0.050 / 0.050
G05     151.9          52.9               14.0 +/-    0.91      17.1 +/-    0.91  0.060 / 0.050
G06     49.1           22.2                8.5 +/-    0.82      17.8 +/-    0.82  0.030 / 0.040
G12     210.2          76.5               10.9 +/-    0.57      11.2 +/-    0.57  0.040 / 0.040
G19     90.7           18.1               10.6 +/-    0.55      24.3 +/-    0.55  0.050 / 0.060
G25     308.4          46.1               10.0 +/-    1.53      13.2 +/-    1.53  0.040 / 0.060
G29     299.6          19.7               10.1 +/-    1.22      22.5 +/-    1.22  0.060 / 0.090