PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/03-15:57:50
G03     242.4          70.5               11.1 +/-    0.71      11.7 +/-    0.71  0.120 / 0.270
G09     300.3          13.8                7.7 +/-    1.38      19.6 +/-    1.38  0.110 / 0.310
G14     94.8           20.1                7.1 +/-    1.67      15.6 +/-    1.67  0.040 / 0.030
G16     133.3          55.5               11.0 +/-    0.47      13.0 +/-    0.47  0.040 / 0.040
G22     192.9          58.0               11.9 +/-    0.49      13.7 +/-    0.49  0.040 / 0.050
G23     318.1          48.3                8.1 +/-    0.39      10.4 +/-    0.39  0.030 / 0.050
G26     75.1           52.6                8.3 +/-    1.12      10.2 +/-    1.12  0.040 / 0.040
G31     50.3           21.9                5.4 +/-    3.10      11.4 +/-    3.10  0.030 / 0.040