PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/10-04:13:10
G02     47.0           43.0                6.2 +/-    1.10       8.6 +/-    1.10  0.030 / 0.040
G05     96.0           68.7                7.4 +/-    0.83       7.9 +/-    0.83  0.050 / 0.040
G12     189.9          51.9                9.5 +/-    0.80      11.7 +/-    0.80  0.030 / 0.030
G20     209.4          18.6                6.8 +/-    1.55      15.4 +/-    1.55  0.040 / 0.030
G25     271.1          58.0                3.1 +/-    1.01       3.5 +/-    1.01  0.200 / 0.310
G29     317.2          39.3                5.3 +/-    1.13       7.8 +/-    1.13  0.170 / 0.330