PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/27-07:42:30
G01     60.9           30.1                6.9 +/-    1.11      12.0 +/-    1.11  0.040 / 0.040
G06     179.5          13.1               -1.5 +/-   25.23      -3.9 +/-   25.23  0.040 / 0.030
G07     140.7          24.0                7.0 +/-    2.85      14.1 +/-    2.85  0.140 / 0.240
G11     50.2           28.4                5.7 +/-    2.01      10.3 +/-    2.01  0.130 / 0.250
G13     264.0          37.1                7.7 +/-    1.90      11.8 +/-    1.90  0.040 / 0.050
G15     294.8          16.7                2.8 +/-    2.62       6.6 +/-    2.62  0.040 / 0.050
G17     247.3          74.5                8.4 +/-    0.25       8.6 +/-    0.25  0.320 / 0.700
G19     229.3          50.8                7.6 +/-    2.99       9.5 +/-    2.99  0.240 / 0.430
G28     16.7           60.5                7.0 +/-    2.57       7.9 +/-    2.57  0.080 / 0.140
G30     142.8          58.0                9.4 +/-    0.52      10.9 +/-    0.52  0.080 / 0.130