PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/27-18:42:40
G03     186.1          13.4               17.6 +/-    5.68      45.4 +/-    5.68  0.060 / 0.080
G07     296.0          40.4               13.0 +/-    1.11      18.8 +/-    1.11  0.060 / 0.070
G08     141.5          31.5               16.3 +/-    1.08      27.7 +/-    1.08  0.030 / 0.040
G09     318.1          68.0               11.5 +/-    1.25      12.3 +/-    1.25  0.030 / 0.030
G16     41.8           32.6               10.9 +/-    0.98      18.1 +/-    0.98  0.100 / 0.340
G23     131.9          70.3               13.4 +/-    0.84      14.1 +/-    0.84  0.070 / 0.360
G27     91.2           35.8               14.6 +/-    0.61      22.8 +/-    0.61  0.030 / 0.040
G30     279.3          18.3               12.8 +/-    0.89      29.5 +/-    0.89  0.030 / 0.050