PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/06-12:27:50
G08     319.6          12.5                1.6 +/-    1.32       4.3 +/-    1.32  0.050 / 0.050
G10     306.6          54.9                3.3 +/-    0.86       3.9 +/-    0.86  0.050 / 0.040
G14     211.3          17.5                2.1 +/-    1.92       4.9 +/-    1.92  0.060 / 0.080
G15     45.6           23.0                1.2 +/-    0.53       2.5 +/-    0.53  0.060 / 0.120
G20     6.1            64.7                4.2 +/-    0.40       4.6 +/-    0.40  0.030 / 0.050
G21     115.7          64.8                3.7 +/-    0.55       4.0 +/-    0.55  0.030 / 0.050
G24     88.5           27.7                3.7 +/-    0.83       6.9 +/-    0.83  0.080 / 0.310
G27     297.0          34.8                3.8 +/-    1.11       6.0 +/-    1.11  0.100 / 0.450
G32     213.3          34.6                6.2 +/-    1.03      10.0 +/-    1.03  0.120 / 0.240