PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/11-18:57:40
G01     228.0          18.5               10.0 +/-    2.63      22.9 +/-    2.63  0.030 / 0.040
G03     287.3          68.7                9.9 +/-    0.90      10.5 +/-    0.90  0.030 / 0.040
G14     84.3           26.6                8.3 +/-    2.69      15.7 +/-    2.69  0.050 / 0.090
G16     149.7          42.7               11.5 +/-    1.29      16.1 +/-    1.29  0.060 / 0.080
G22     217.9          72.0               11.7 +/-    0.29      12.2 +/-    0.29  0.040 / 0.050
G23     306.4          36.8                9.1 +/-    1.31      13.9 +/-    1.31  0.040 / 0.060
G26     100.8          53.8               10.4 +/-    0.73      12.5 +/-    0.73  0.080 / 0.170
G31     44.5           33.7                8.3 +/-    1.37      13.6 +/-    1.37  0.080 / 0.160