PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/08-06:57:50
G01     58.8           29.4                2.2 +/-    2.15       3.9 +/-    2.15  0.040 / 0.040
G06     179.1          14.7                2.7 +/-    1.86       6.9 +/-    1.86  0.040 / 0.040
G07     141.6          22.5                6.9 +/-    2.77      14.3 +/-    2.77  0.170 / 0.240
G11     49.3           27.3                2.3 +/-    1.82       4.3 +/-    1.82  0.180 / 0.270
G13     261.6          36.5                6.6 +/-    2.38      10.2 +/-    2.38  0.120 / 0.140
G15     292.5          16.9                5.8 +/-    1.44      13.7 +/-    1.44  0.070 / 0.140
G17     254.5          76.3                0.1 +/-    0.38       0.1 +/-    0.38  0.040 / 0.050
G19     231.3          52.6                7.7 +/-    2.23       9.4 +/-    2.23  0.040 / 0.050
G28     19.8           60.3                1.8 +/-    1.10       2.0 +/-    1.10  0.040 / 0.020
G30     144.3          56.5                7.4 +/-    1.19       8.6 +/-    1.19  0.040 / 0.020