PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/15-08:57:40
G02     209.0          51.7                8.3 +/-    0.60      10.2 +/-    0.60  0.110 / 0.170
G06     98.4           79.0                5.8 +/-    0.57       5.9 +/-    0.57  0.120 / 0.170
G17     49.0           38.3                3.9 +/-    1.52       5.8 +/-    1.52  0.040 / 0.050
G19     29.7           54.0                4.7 +/-    1.04       5.6 +/-    1.04  0.080 / 0.050
G24     280.2          41.4                8.6 +/-    0.58      12.3 +/-    0.58  0.050 / 0.040
G28     112.4          28.3                7.9 +/-    1.03      14.4 +/-    1.03  0.040 / 0.040