PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/23-16:42:30
G03     240.4          70.5               11.8 +/-    0.56      12.5 +/-    0.56  0.080 / 0.260
G09     300.2          13.7                8.5 +/-    1.54      21.9 +/-    1.54  0.080 / 0.250
G14     94.9           19.8               11.7 +/-    1.53      25.8 +/-    1.53  0.050 / 0.070
G16     133.9          55.4               14.0 +/-    0.60      16.6 +/-    0.60  0.060 / 0.060
G22     193.9          58.5               14.0 +/-    1.62      16.1 +/-    1.62  0.140 / 0.210
G23     317.6          47.8                9.2 +/-    1.06      11.9 +/-    1.06  0.080 / 0.240
G26     75.4           52.7               12.0 +/-    0.74      14.6 +/-    0.74  0.040 / 0.050
G31     50.2           22.1                8.0 +/-    1.03      16.7 +/-    1.03  0.050 / 0.050