PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/26-17:58:00
G01     227.6          18.1               13.5 +/-    3.20      31.2 +/-    3.20  0.050 / 0.090
G03     283.9          69.8                9.0 +/-    0.61       9.5 +/-    0.61  0.040 / 0.100
G14     84.6           26.6               10.5 +/-    1.28      19.9 +/-    1.28  0.030 / 0.040
G16     148.5          43.6               12.6 +/-    0.43      17.3 +/-    0.43  0.030 / 0.050
G22     214.0          71.2               10.8 +/-    0.92      11.3 +/-    0.92  0.040 / 0.080
G23     307.3          37.8                9.7 +/-    1.56      14.7 +/-    1.56  0.040 / 0.080
G26     98.9           53.8                9.3 +/-    0.95      11.2 +/-    0.95  0.110 / 0.200
G31     44.9           32.7                8.0 +/-    0.93      13.3 +/-    0.93  0.130 / 0.210