PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/27-16:58:00
G01     250.1          34.7               10.9 +/-    1.41      17.4 +/-    1.41  0.030 / 0.040
G03     315.5          48.6                9.4 +/-    0.89      12.1 +/-    0.89  0.040 / 0.040
G11     239.4          12.3               12.4 +/-    3.82      32.9 +/-    3.82  0.120 / 0.360
G14     60.0           41.7                9.0 +/-    0.53      12.8 +/-    0.53  0.020 / 0.040
G16     162.7          19.2               -8.3 +/-   10.59     -18.7 +/-   10.59  0.030 / 0.050
G22     301.7          69.1               10.4 +/-    0.68      11.0 +/-    0.68  0.040 / 0.090
G23     288.2          21.5                9.5 +/-    2.26      20.2 +/-    2.26  0.050 / 0.100
G26     134.3          39.2               14.3 +/-    0.74      21.1 +/-    0.74  0.060 / 0.060
G31     40.8           56.4                9.5 +/-    1.07      11.2 +/-    1.07  0.050 / 0.050
G32     78.7           21.5                8.4 +/-    1.18      17.8 +/-    1.18  0.100 / 0.260