PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/23-06:28:10
G08     317.4          13.6                3.4 +/-    1.79       8.8 +/-    1.79  0.120 / 0.500
G10     317.6          57.3                3.0 +/-    0.96       3.5 +/-    0.96  0.130 / 0.460
G14     215.1          19.3                6.9 +/-    2.40      15.5 +/-    2.40  0.080 / 0.070
G15     45.8           17.2                2.8 +/-    0.98       6.5 +/-    0.98  0.070 / 0.080
G20     50.8           52.5                3.7 +/-    0.58       4.5 +/-    0.58  0.050 / 0.040
G21     124.7          64.8                3.5 +/-    2.40       3.9 +/-    2.40  0.040 / 0.040
G24     82.6           29.7                4.4 +/-    0.94       7.7 +/-    0.94  0.040 / 0.040
G27     284.6          37.7                4.2 +/-    0.76       6.4 +/-    0.76  0.040 / 0.040
G32     217.2          46.5                7.6 +/-    0.67      10.1 +/-    0.67  0.120 / 0.250