PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/01-21:27:50
G01     48.5           24.3               10.8 +/-    1.11      21.5 +/-    1.11  0.090 / 0.320
G06     177.0          27.6               13.7 +/-    1.04      25.3 +/-    1.04  0.090 / 0.280
G07     147.0          11.0               15.2 +/-    4.60      41.4 +/-    4.60  0.050 / 0.130
G11     44.6           14.5               10.4 +/-    1.64      26.1 +/-    1.64  0.050 / 0.130
G13     248.7          29.2               12.0 +/-    2.01      21.3 +/-    2.01  0.110 / 0.260
G15     281.8          15.3               10.9 +/-    1.96      26.8 +/-    1.96  0.200 / 0.290
G17     304.7          77.2               11.9 +/-    0.93      12.1 +/-    0.93  0.110 / 0.400
G19     249.6          60.5               12.7 +/-    1.03      14.4 +/-    1.03  0.120 / 0.340
G28     56.0           51.8               11.3 +/-    0.51      14.0 +/-    0.51  0.040 / 0.070
G30     150.3          37.9               14.8 +/-    0.85      22.3 +/-    0.85  0.030 / 0.060