PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/17-21:42:50
G01     42.9           18.9                9.0 +/-    4.25      20.4 +/-    4.25  0.230 / 0.300
G06     177.6          32.2               14.5 +/-    1.94      24.3 +/-    1.94  0.390 / 0.240
G13     240.3          25.1               14.5 +/-    2.51      28.3 +/-    2.51  0.040 / 0.030
G15     273.7          13.6               11.5 +/-    1.29      29.7 +/-    1.29  0.030 / 0.040
G17     355.0          73.2               11.9 +/-    0.55      12.4 +/-    0.55  0.040 / 0.050
G19     265.6          67.1               12.3 +/-    0.90      13.2 +/-    0.90  0.040 / 0.050
G24     317.2          16.9                9.6 +/-    1.85      22.8 +/-    1.85  0.080 / 0.300
G28     61.2           51.8               11.6 +/-    1.27      14.3 +/-    1.27  0.130 / 0.360
G30     153.0          30.2               13.8 +/-    2.74      24.0 +/-    2.74  0.070 / 0.080