PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/11-17:57:50
G01     42.7           18.6               10.5 +/-    3.46      24.0 +/-    3.46  0.050 / 0.060
G06     175.8          34.0               13.6 +/-    1.49      22.0 +/-    1.49  0.080 / 0.080
G13     240.0          25.1               13.5 +/-    1.84      26.3 +/-    1.84  0.320 / 0.280
G15     273.8          13.5               11.2 +/-    1.67      28.8 +/-    1.67  0.320 / 0.320
G17     348.0          74.2               12.0 +/-    0.27      12.4 +/-    0.27  0.160 / 0.220
G19     266.9          67.9               13.1 +/-    0.94      14.0 +/-    0.94  0.120 / 0.310
G24     317.4          16.0                9.9 +/-    2.19      24.0 +/-    2.19  0.030 / 0.030
G28     60.0           52.5               11.3 +/-    1.44      13.9 +/-    1.44  0.040 / 0.030
G30     152.5          28.5               14.4 +/-    1.20      26.0 +/-    1.20  0.040 / 0.040