PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/13-21:27:30
G03     246.3          69.7               14.6 +/-    0.65      15.5 +/-    0.65  0.030 / 0.050
G09     301.0          14.7                9.5 +/-    1.86      23.9 +/-    1.86  0.030 / 0.050
G14     96.8           17.1               11.5 +/-    1.16      27.2 +/-    1.16  0.040 / 0.050
G16     137.1          55.6               14.4 +/-    0.54      17.1 +/-    0.54  0.040 / 0.060
G22     197.9          59.5               16.7 +/-    0.84      19.0 +/-    0.84  0.060 / 0.120
G23     316.4          46.2               10.8 +/-    1.29      14.3 +/-    1.29  0.070 / 0.140
G26     76.2           53.7               10.0 +/-    0.52      12.1 +/-    0.52  0.120 / 0.510
G31     50.1           23.0                6.9 +/-    0.68      14.1 +/-    0.68  0.140 / 0.490