PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/19-02:57:50
G08     273.8          21.2               12.6 +/-    2.30      26.9 +/-    2.30  0.020 / 0.020
G10     42.6           61.8                8.2 +/-    0.51       9.1 +/-    0.51  0.020 / 0.020
G11     315.1          13.5                7.7 +/-    2.08      19.9 +/-    2.08  0.100 / 0.160
G14     252.3          62.3               11.0 +/-    0.55      12.3 +/-    0.55  0.130 / 0.160
G18     82.5           42.5                9.6 +/-    1.27      13.4 +/-    1.27  0.160 / 0.220
G21     152.4          23.1               10.4 +/-    1.92      21.3 +/-    1.92  0.100 / 0.270
G24     44.4           17.3                8.4 +/-    2.72      19.7 +/-    2.72  0.040 / 0.020
G27     236.9          21.0               10.7 +/-    2.30      22.9 +/-    2.30  0.030 / 0.020
G31     180.5          21.3               11.9 +/-    1.52      25.3 +/-    1.52  0.040 / 0.040
G32     297.4          75.4                9.8 +/-    0.46      10.1 +/-    0.46  0.040 / 0.060