PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/31-03:12:50
G08     277.5          21.7                7.4 +/-    2.57      15.7 +/-    2.57  0.080 / 0.210
G10     39.7           61.7                7.1 +/-    0.44       7.9 +/-    0.44  0.090 / 0.230
G14     245.6          56.9               11.0 +/-    0.84      12.9 +/-    0.84  0.040 / 0.060
G18     316.4          22.4                3.7 +/-    3.11       7.8 +/-    3.11  0.040 / 0.070
G20     57.2           62.6               10.3 +/-    0.44      11.4 +/-    0.44  0.110 / 0.200
G21     152.5          26.9                9.3 +/-    1.68      17.5 +/-    1.68  0.120 / 0.250
G24     44.3           16.4                5.0 +/-    1.46      12.1 +/-    1.46  0.030 / 0.030
G27     240.6          23.1                9.0 +/-    2.20      18.3 +/-    2.20  0.030 / 0.030
G31     179.0          21.2               10.4 +/-    2.27      22.2 +/-    2.27  0.090 / 0.170
G32     300.7          76.9                8.4 +/-    0.93       8.6 +/-    0.93  0.110 / 0.160