PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/04-15:57:40
G02     249.1          75.5                8.3 +/-    0.58       8.5 +/-    0.58  0.100 / 0.160
G05     171.0          19.0               12.2 +/-    2.14      27.4 +/-    2.14  0.080 / 0.130
G06     40.5           51.8                9.2 +/-    0.38      11.4 +/-    0.38  0.030 / 0.040
G12     322.9          61.9                6.6 +/-    0.76       7.4 +/-    0.76  0.050 / 0.050
G17     75.2           18.0                6.8 +/-    1.65      15.7 +/-    1.65  0.250 / 0.280
G19     58.0           39.4                7.5 +/-    1.19      11.1 +/-    1.19  0.130 / 0.270
G24     238.8          32.1                9.4 +/-    1.00      15.7 +/-    1.00  0.080 / 0.120
G25     317.2          16.8                5.3 +/-    3.06      12.6 +/-    3.06  0.090 / 0.100