PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/30-00:57:50
G10     254.1          28.6               12.9 +/-    2.33      23.3 +/-    2.33  0.100 / 0.230
G13     50.9           28.8                8.1 +/-    1.61      14.5 +/-    1.61  0.080 / 0.270
G15     82.2           57.8               11.0 +/-    0.63      12.8 +/-    0.63  0.040 / 0.040
G16     293.1          14.3                8.0 +/-    1.44      20.2 +/-    1.44  0.030 / 0.030
G18     274.2          57.3                8.9 +/-    1.50      10.4 +/-    1.50  0.110 / 0.350
G20     46.5           43.7                8.6 +/-    0.84      11.8 +/-    0.84  0.110 / 0.280
G21     338.6          63.1                9.3 +/-    0.46      10.3 +/-    0.46  0.130 / 0.140
G26     265.6          13.8               10.8 +/-    4.03      27.7 +/-    4.03  0.130 / 0.110
G29     165.2          43.2               10.9 +/-    1.04      15.1 +/-    1.04  0.040 / 0.050