PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/17-23:27:50
G03     201.8          44.8                7.6 +/-    1.29      10.2 +/-    1.29  0.100 / 0.120
G07     269.1          25.8                9.0 +/-    1.67      17.3 +/-    1.67  0.080 / 0.120
G08     154.3          10.0              -17.1 +/-   21.78     -47.6 +/-   21.78  0.030 / 0.040
G09     317.2          42.0                6.6 +/-    1.68       9.3 +/-    1.68  0.040 / 0.040
G16     65.1           60.4                7.4 +/-    0.46       8.3 +/-    0.46  0.100 / 0.250
G22     185.0          28.2                8.3 +/-    2.65      15.1 +/-    2.65  0.100 / 0.190
G23     341.3          70.2                7.4 +/-    0.60       7.8 +/-    0.60  0.030 / 0.040
G26     46.5           34.3                4.9 +/-    0.78       7.9 +/-    0.78  0.040 / 0.040
G27     126.2          19.1               10.0 +/-    1.80      22.5 +/-    1.80  0.070 / 0.140