PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/14-20:57:50
G01     226.2          16.8                9.5 +/-    4.15      22.6 +/-    4.15  0.030 / 0.040
G03     283.6          68.8                5.4 +/-    1.02       5.7 +/-    1.02  0.040 / 0.050
G14     86.8           24.4                9.5 +/-    0.67      18.9 +/-    0.67  0.040 / 0.100
G16     149.3          44.5               14.1 +/-    1.03      19.1 +/-    1.03  0.040 / 0.090
G22     215.2          70.4                8.7 +/-    0.83       9.2 +/-    0.83  0.040 / 0.070
G23     307.7          37.6                6.8 +/-    1.04      10.3 +/-    1.04  0.040 / 0.090
G26     97.9           54.5               10.2 +/-    0.45      12.2 +/-    0.45  0.110 / 0.320
G31     45.1           32.5                5.6 +/-    0.57       9.2 +/-    0.57  0.140 / 0.270