PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/28-18:58:00
G01     251.4          35.4               10.6 +/-    1.64      16.7 +/-    1.64  0.160 / 0.260
G03     315.9          45.6                8.6 +/-    0.92      11.5 +/-    0.92  0.120 / 0.270
G11     239.3          12.9               11.6 +/-    2.41      30.4 +/-    2.41  0.040 / 0.090
G14     59.4           41.7                8.9 +/-    0.78      12.6 +/-    0.78  0.040 / 0.100
G22     304.5          66.6                8.8 +/-    1.02       9.5 +/-    1.02  0.040 / 0.050
G23     286.8          19.7                9.7 +/-    1.62      21.5 +/-    1.62  0.030 / 0.040
G25     40.3           10.6                7.7 +/-    2.19      21.2 +/-    2.19  0.030 / 0.050
G26     136.6          37.8               13.0 +/-    1.18      19.6 +/-    1.18  0.030 / 0.050
G31     40.8           58.7                7.6 +/-    0.68       8.7 +/-    0.68  0.100 / 0.350
G32     77.4           22.7                8.0 +/-    0.76      16.4 +/-    0.76  0.180 / 0.420