PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/31-03:57:40
G01     319.5          16.8                6.2 +/-    3.17      14.7 +/-    3.17  0.200 / 0.250
G08     257.9          13.9                8.8 +/-    3.81      22.6 +/-    3.81  0.250 / 0.290
G10     77.7           53.8                7.0 +/-    0.62       8.4 +/-    0.62  0.040 / 0.050
G11     303.9          22.8                6.9 +/-    0.82      14.3 +/-    0.82  0.030 / 0.040
G14     288.1          69.2                8.3 +/-    0.33       8.8 +/-    0.33  0.070 / 0.230
G18     305.9          39.3                6.5 +/-    1.25       9.6 +/-    1.25  0.090 / 0.210
G20     92.3           51.7                8.7 +/-    0.89      10.7 +/-    0.89  0.120 / 0.350
G31     174.3          42.4                9.5 +/-    1.28      13.4 +/-    1.28  0.120 / 0.360
G32     9.3            67.3                6.4 +/-    0.58       6.9 +/-    0.58  0.080 / 0.100