PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/15-03:43:00
G03     258.3          70.1                5.7 +/-    0.87       6.0 +/-    0.87  0.140 / 0.230
G09     300.3          15.0                2.4 +/-    1.03       6.0 +/-    1.03  0.110 / 0.200
G14     94.0           19.9                5.4 +/-    1.06      11.8 +/-    1.06  0.120 / 0.270
G16     132.4          54.3                7.5 +/-    0.63       9.0 +/-    0.63  0.160 / 0.260
G22     203.7          61.7                7.0 +/-    0.57       7.8 +/-    0.57  0.040 / 0.050
G23     316.4          46.6                4.7 +/-    0.55       6.2 +/-    0.55  0.040 / 0.060
G26     77.6           53.2                5.5 +/-    0.56       6.7 +/-    0.56  0.040 / 0.040
G31     50.2           22.2               -1.5 +/-    2.32      -3.1 +/-    2.32  0.040 / 0.040