PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/20-22:27:50
G01     258.9          38.7                9.8 +/-    1.19      14.6 +/-    1.19  0.040 / 0.050
G03     316.6          36.8                7.1 +/-    0.62      10.9 +/-    0.62  0.030 / 0.050
G11     241.2          15.3                8.6 +/-    1.38      21.3 +/-    1.38  0.050 / 0.070
G14     53.5           44.5                5.4 +/-    0.85       7.3 +/-    0.85  0.060 / 0.100
G22     310.8          59.2                6.6 +/-    1.39       7.6 +/-    1.39  0.060 / 0.090
G23     281.0          13.9                1.3 +/-   13.29       3.4 +/-   13.29  0.060 / 0.080
G25     41.3           10.2                5.8 +/-    1.74      16.1 +/-    1.74  0.060 / 0.090
G26     143.2          32.0                8.7 +/-    0.66      14.6 +/-    0.66  0.060 / 0.110
G31     44.3           67.8                6.7 +/-    0.34       7.2 +/-    0.34  0.120 / 0.330
G32     71.5           27.1                5.5 +/-    0.72      10.3 +/-    0.72  0.080 / 0.340