PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/31-16:42:40
G02     315.9          79.8                8.3 +/-    0.97       8.5 +/-    0.97  0.060 / 0.110
G05     165.9          31.2               11.5 +/-    0.77      19.7 +/-    0.77  0.040 / 0.100
G06     41.8           39.4                7.7 +/-    0.51      11.3 +/-    0.51  0.150 / 0.250
G12     311.9          75.3                8.2 +/-    0.45       8.5 +/-    0.45  0.110 / 0.230
G17     85.5           10.6                9.1 +/-    2.81      24.9 +/-    2.81  0.030 / 0.030
G19     71.1           31.5                9.0 +/-    0.56      15.4 +/-    0.56  0.020 / 0.030
G24     227.7          23.4               12.5 +/-    2.29      25.4 +/-    2.29  0.030 / 0.050
G25     317.3          28.3                6.7 +/-    1.59      12.2 +/-    1.59  0.030 / 0.050