PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/22-07:42:30
G03     230.6          64.5                6.3 +/-    1.46       6.9 +/-    1.46  0.090 / 0.120
G07     252.6          13.2                8.8 +/-    2.02      22.9 +/-    2.02  0.090 / 0.170
G09     308.1          26.0                5.3 +/-    2.40      10.2 +/-    2.40  0.040 / 0.050
G16     118.2          63.1                8.1 +/-    0.39       9.0 +/-    0.39  0.050 / 0.050
G22     191.0          49.3                6.2 +/-    1.21       7.9 +/-    1.21  0.210 / 0.190
G23     322.7          52.5                6.4 +/-    0.76       7.8 +/-    0.76  0.080 / 0.270
G26     62.8           50.2                6.7 +/-    0.96       8.4 +/-    0.96  0.030 / 0.030
G31     55.0           16.1                2.8 +/-    1.28       6.7 +/-    1.28  0.030 / 0.030