PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/24-12:43:10
G03     231.2          67.0                9.1 +/-    1.05       9.8 +/-    1.05  0.110 / 0.240
G09     304.4          19.5                4.8 +/-    1.79      10.8 +/-    1.79  0.110 / 0.210
G14     99.6           17.2                7.8 +/-    2.20      18.3 +/-    2.20  0.050 / 0.050
G16     119.4          60.4               10.0 +/-    0.62      11.3 +/-    0.62  0.040 / 0.040
G22     189.4          51.0                9.7 +/-    1.15      12.0 +/-    1.15  0.030 / 0.040
G23     324.1          53.9                7.0 +/-    0.50       8.5 +/-    0.50  0.030 / 0.040
G26     64.5           49.2                7.1 +/-    0.64       9.1 +/-    0.64  0.040 / 0.080
G31     53.8           16.3                7.2 +/-    2.86      17.4 +/-    2.86  0.040 / 0.050