PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/07-20:58:00
G03     198.0          40.8               13.8 +/-    0.58      19.8 +/-    0.58  0.110 / 0.140
G07     269.9          24.6               11.0 +/-    1.81      21.7 +/-    1.81  0.130 / 0.130
G08     156.7          10.0              -15.8 +/-   17.37     -44.2 +/-   17.37  0.240 / 0.390
G09     316.8          40.6               10.2 +/-    0.65      14.6 +/-    0.65  0.030 / 0.040
G16     60.8           59.4               11.2 +/-    0.68      12.8 +/-    0.68  0.030 / 0.050
G22     182.9          25.3               11.8 +/-    1.74      22.9 +/-    1.74  0.080 / 0.140
G23     353.0          74.6               10.7 +/-    1.43      11.1 +/-    1.43  0.070 / 0.130
G26     44.8           30.1                8.0 +/-    1.23      13.9 +/-    1.23  0.030 / 0.030
G27     120.7          21.6               10.8 +/-    1.78      22.8 +/-    1.78  0.040 / 0.030