PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/11-19:57:30
G03     213.7          60.4               11.4 +/-    1.77      12.9 +/-    1.77  0.050 / 0.080
G07     254.0          12.5                8.7 +/-    1.96      23.0 +/-    1.96  0.050 / 0.080
G09     308.1          24.0                9.3 +/-    1.29      18.6 +/-    1.29  0.170 / 0.150
G16     108.3          64.2               12.6 +/-    0.44      13.8 +/-    0.44  0.080 / 0.200
G22     188.9          45.1               10.9 +/-    1.07      14.6 +/-    1.07  0.140 / 0.330
G23     327.9          57.5                9.9 +/-    0.42      11.6 +/-    0.42  0.210 / 0.330
G26     57.1           46.0                8.2 +/-    0.59      11.0 +/-    0.59  0.030 / 0.030
G31     57.2           12.6                8.0 +/-    1.00      21.1 +/-    1.00  0.030 / 0.040