PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/06-19:12:40
G01     229.8          20.3               10.2 +/-    1.68      22.2 +/-    1.68  0.040 / 0.080
G03     293.7          66.9                7.7 +/-    0.58       8.3 +/-    0.58  0.040 / 0.090
G14     82.1           27.9                9.3 +/-    0.51      17.0 +/-    0.51  0.030 / 0.040
G16     151.7          40.1               13.2 +/-    1.46      19.2 +/-    1.46  0.030 / 0.040
G22     226.1          73.7                9.8 +/-    1.17      10.2 +/-    1.17  0.080 / 0.170
G23     304.5          34.9                9.3 +/-    1.40      14.8 +/-    1.40  0.090 / 0.190
G26     105.5          53.0               10.3 +/-    0.43      12.5 +/-    0.43  0.060 / 0.080
G31     43.6           36.0                7.3 +/-    1.28      11.4 +/-    1.28  0.060 / 0.090