PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/15-18:43:10
G01     227.2          17.8               11.0 +/-    4.24      25.6 +/-    4.24  0.030 / 0.040
G03     284.0          69.5                8.6 +/-    1.25       9.1 +/-    1.25  0.030 / 0.040
G14     85.2           26.0               11.3 +/-    1.28      21.5 +/-    1.28  0.040 / 0.080
G16     148.7          43.8               12.9 +/-    1.19      17.7 +/-    1.19  0.060 / 0.100
G22     214.6          71.1               11.5 +/-    0.92      12.1 +/-    0.92  0.050 / 0.100
G23     307.3          37.7                9.0 +/-    2.00      13.6 +/-    2.00  0.050 / 0.080
G26     98.6           54.0               10.7 +/-    0.78      12.9 +/-    0.78  0.110 / 0.230
G31     44.9           32.6                8.6 +/-    0.94      14.3 +/-    0.94  0.120 / 0.230