PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/15-03:13:10
G08     274.0          21.2                8.2 +/-    2.14      17.6 +/-    2.14  0.030 / 0.030
G10     42.3           61.8                4.3 +/-    0.43       4.8 +/-    0.43  0.030 / 0.020
G11     315.2          13.5                3.4 +/-    3.06       8.8 +/-    3.06  0.190 / 0.250
G14     252.0          62.2                8.4 +/-    0.68       9.3 +/-    0.68  0.240 / 0.200
G18     82.2           42.7                6.2 +/-    0.91       8.7 +/-    0.91  0.040 / 0.020
G21     152.3          23.3                8.4 +/-    2.34      17.1 +/-    2.34  0.050 / 0.030
G24     44.5           17.4                4.7 +/-    2.95      10.9 +/-    2.95  0.090 / 0.190
G27     237.0          21.1                7.4 +/-    1.38      15.9 +/-    1.38  0.090 / 0.180
G31     180.4          21.2                8.7 +/-    1.77      18.5 +/-    1.77  0.060 / 0.040
G32     297.3          75.4                6.2 +/-    0.58       6.4 +/-    0.58  0.050 / 0.050