PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/13-12:28:10
G08     289.9          21.5                7.1 +/-    0.78      15.0 +/-    0.78  0.090 / 0.080
G10     21.8           63.0                7.7 +/-    1.26       8.5 +/-    1.26  0.090 / 0.100
G14     236.3          50.0                7.7 +/-    2.01       9.7 +/-    2.01  0.070 / 0.090
G21     149.2          32.2                7.7 +/-    1.18      12.9 +/-    1.18  0.090 / 0.070
G24     50.6           22.6                3.1 +/-    2.62       6.5 +/-    2.62  0.150 / 0.330
G27     246.5          27.7                6.5 +/-    2.26      11.9 +/-    2.26  0.190 / 0.240
G31     181.6          13.3                4.2 +/-    5.73      11.0 +/-    5.73  0.060 / 0.090
G32     266.1          73.7                7.8 +/-    0.41       8.1 +/-    0.41  0.060 / 0.100