PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/13-06:58:10
G08     320.8          10.4              -17.1 +/-   12.39     -47.3 +/-   12.39  0.130 / 0.550
G10     309.3          55.2                4.7 +/-    0.80       5.6 +/-    0.80  0.190 / 0.550
G14     213.3          14.8                6.9 +/-    1.70      17.2 +/-    1.70  0.060 / 0.080
G15     45.5           21.2                2.0 +/-    0.94       4.3 +/-    0.94  0.060 / 0.060
G20     51.0           50.9                4.4 +/-    1.11       5.5 +/-    1.11  0.040 / 0.040
G21     116.2          68.8                6.4 +/-    0.30       6.8 +/-    0.30  0.030 / 0.040
G24     88.6           28.9                5.7 +/-    0.47      10.3 +/-    0.47  0.060 / 0.110
G27     290.8          37.0                7.5 +/-    1.13      11.4 +/-    1.13  0.070 / 0.110
G32     214.2          41.5                7.7 +/-    0.85      10.9 +/-    0.85  0.030 / 0.040