PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/08-13:13:10
G02     226.6          66.2                7.0 +/-    1.00       7.6 +/-    1.00  0.060 / 0.080
G06     43.9           64.9                5.1 +/-    0.67       5.6 +/-    0.67  0.060 / 0.070
G12     321.4          47.0                6.3 +/-    1.75       8.2 +/-    1.75  0.040 / 0.050
G17     66.1           24.9                6.5 +/-    2.22      12.7 +/-    2.22  0.040 / 0.040
G19     45.8           46.4                6.0 +/-    0.64       7.9 +/-    0.64  0.030 / 0.030
G24     249.4          38.4                9.6 +/-    1.94      14.4 +/-    1.94  0.030 / 0.030