PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/11-21:28:10
G01     220.3          11.0                9.3 +/-    1.00      25.3 +/-    1.00  0.030 / 0.040
G03     257.1          70.4                9.0 +/-    0.45       9.5 +/-    0.45  0.030 / 0.040
G09     299.1          12.4                6.6 +/-   11.62      17.4 +/-   11.62  0.050 / 0.060
G14     94.1           19.1                9.4 +/-    1.41      21.1 +/-    1.41  0.040 / 0.060
G16     141.4          52.6               11.1 +/-    0.34      13.6 +/-    0.34  0.210 / 0.410
G22     201.3          62.8                9.9 +/-    0.65      11.0 +/-    0.65  0.170 / 0.460
G23     313.9          43.7                9.1 +/-    1.14      12.5 +/-    1.14  0.140 / 0.150
G26     82.1           54.6                9.4 +/-    0.51      11.2 +/-    0.51  0.130 / 0.110
G31     48.6           25.7                6.5 +/-    2.93      12.5 +/-    2.93  0.300 / 0.310