PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/19-16:28:10
G02     221.0          62.0               10.5 +/-    1.69      11.7 +/-    1.69  0.080 / 0.100
G06     48.0           67.6                9.3 +/-    0.32       9.9 +/-    0.32  0.070 / 0.090
G12     321.5          45.3                8.8 +/-    0.71      11.8 +/-    0.71  0.060 / 0.060
G17     62.2           28.0                8.4 +/-    2.08      15.3 +/-    2.08  0.050 / 0.060
G19     41.0           48.9               10.2 +/-    0.62      13.1 +/-    0.62  0.030 / 0.030
G24     256.7          40.4                9.5 +/-    4.71      13.7 +/-    4.71  0.030 / 0.030
G28     125.6          10.3               10.3 +/-    2.54      28.5 +/-    2.54  0.050 / 0.040