PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/13-11:13:00
G08     320.1          11.0               -5.4 +/-   26.12     -14.8 +/-   26.12  0.060 / 0.070
G10     312.1          55.9                5.1 +/-    2.19       6.0 +/-    2.19  0.060 / 0.070
G14     213.7          18.7                4.6 +/-    1.57      10.4 +/-    1.57  0.120 / 0.280
G15     45.5           18.4                3.9 +/-    2.26       9.0 +/-    2.26  0.300 / 0.480
G20     75.1           19.8                5.0 +/-    1.95      11.0 +/-    1.95  0.080 / 0.180
G21     120.7          65.5                7.7 +/-    1.15       8.3 +/-    1.15  0.090 / 0.210
G24     87.1           29.4                7.8 +/-    1.71      13.8 +/-    1.71  0.040 / 0.040
G27     287.8          37.5                6.2 +/-    2.12       9.5 +/-    2.12  0.030 / 0.030
G32     215.5          42.8                7.4 +/-    1.09      10.3 +/-    1.09  0.100 / 0.060