PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/19-15:57:50
G02     201.6          21.7               13.3 +/-    0.97      28.1 +/-    0.97  0.120 / 0.520
G06     169.4          57.7               11.8 +/-    0.64      13.7 +/-    0.64  0.120 / 0.460
G13     226.5          11.0               11.0 +/-    4.49      30.0 +/-    4.49  0.090 / 0.240
G17     29.1           55.0                8.4 +/-    0.68      10.0 +/-    0.68  0.080 / 0.280
G19     341.4          70.0               11.2 +/-    0.71      11.8 +/-    0.71  0.070 / 0.130
G24     309.0          30.6                7.2 +/-    1.29      12.4 +/-    1.29  0.070 / 0.110
G28     92.3           37.4                9.5 +/-    1.14      14.4 +/-    1.14  0.030 / 0.050
G30     158.0          13.1               13.2 +/-    1.03      34.5 +/-    1.03  0.040 / 0.050