PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/12-19:12:30
G01     221.9          12.6               11.1 +/-    3.05      29.3 +/-    3.05  0.030 / 0.040
G03     259.8          71.2               10.0 +/-    0.75      10.5 +/-    0.75  0.030 / 0.040
G09     297.6          10.7              -15.0 +/-   10.65     -41.3 +/-   10.65  0.040 / 0.050
G14     91.8           21.3                9.2 +/-    1.24      19.7 +/-    1.24  0.070 / 0.050
G16     141.8          51.1               12.7 +/-    0.43      15.9 +/-    0.43  0.120 / 0.120
G22     201.7          64.3               10.9 +/-    0.83      12.0 +/-    0.83  0.180 / 0.110
G23     313.0          43.0               10.1 +/-    0.82      14.0 +/-    0.82  0.110 / 0.230
G26     84.6           54.3               10.5 +/-    0.75      12.6 +/-    0.75  0.130 / 0.300
G31     47.9           26.4                8.0 +/-    2.49      15.2 +/-    2.49  0.030 / 0.040