PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/28-19:58:00
G01     227.1          17.7               10.5 +/-    4.76      24.5 +/-    4.76  0.050 / 0.100
G03     285.6          68.7                9.1 +/-    0.51       9.6 +/-    0.51  0.050 / 0.080
G14     85.6           25.5               11.5 +/-    0.99      22.2 +/-    0.99  0.090 / 0.200
G16     149.5          43.6               12.9 +/-    0.67      17.8 +/-    0.67  0.090 / 0.210
G22     216.6          71.2               11.1 +/-    0.64      11.6 +/-    0.64  0.030 / 0.050
G23     307.0          37.2                8.5 +/-    0.96      12.9 +/-    0.96  0.030 / 0.040
G26     99.3           54.1               10.5 +/-    0.39      12.7 +/-    0.39  0.040 / 0.090
G31     44.8           33.1                6.8 +/-    0.55      11.2 +/-    0.55  0.040 / 0.090