PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/19-15:42:40
G02     228.9          67.9                8.0 +/-    0.76       8.6 +/-    0.76  0.070 / 0.090
G05     174.6          10.5               -6.1 +/-   18.85     -16.8 +/-   18.85  0.080 / 0.100
G06     42.9           63.4                7.2 +/-    0.43       8.0 +/-    0.43  0.050 / 0.100
G12     320.6          45.7                8.2 +/-    0.44      10.9 +/-    0.44  0.040 / 0.110
G17     63.8           28.5                7.2 +/-    1.26      12.9 +/-    1.26  0.040 / 0.030
G19     52.1           40.7                8.5 +/-    1.64      12.2 +/-    1.64  0.040 / 0.030
G24     252.8          37.5               10.9 +/-    1.69      16.5 +/-    1.69  0.050 / 0.070
G28     127.7          11.4                9.5 +/-    2.94      25.8 +/-    2.94  0.050 / 0.070