PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/18-08:12:40
G01     64.5           31.1                4.4 +/-    0.75       7.5 +/-    0.75  0.040 / 0.040
G06     180.3          10.4              -19.9 +/-   12.06     -54.9 +/-   12.06  0.030 / 0.040
G07     139.1          26.6                5.2 +/-    1.35       9.8 +/-    1.35  0.130 / 0.290
G11     51.9           30.6                4.5 +/-    1.50       7.9 +/-    1.50  0.130 / 0.270
G13     268.0          38.0                5.6 +/-    2.41       8.4 +/-    2.41  0.160 / 0.500
G15     298.1          16.2                4.1 +/-    1.91       9.8 +/-    1.91  0.070 / 0.100
G17     238.6          71.6                5.8 +/-    0.35       6.1 +/-    0.35  0.060 / 0.110
G19     226.3          47.9                6.2 +/-    2.28       8.1 +/-    2.28  0.040 / 0.050
G28     11.0           60.9                3.2 +/-    1.35       3.5 +/-    1.35  0.050 / 0.060
G30     140.0          61.0                5.5 +/-    0.53       6.2 +/-    0.53  0.080 / 0.170