PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/08-11:58:00
G01     230.2          21.7                2.8 +/-    3.00       5.8 +/-    3.00  0.040 / 0.040
G03     295.9          67.7                4.9 +/-    0.52       5.3 +/-    0.52  0.040 / 0.030
G14     80.8           27.6                4.3 +/-    1.12       7.9 +/-    1.12  0.080 / 0.250
G16     154.1          36.8                6.9 +/-    0.85      10.5 +/-    0.85  0.100 / 0.180
G22     222.6          74.1                6.5 +/-    0.66       6.7 +/-    0.66  0.030 / 0.030
G23     303.0          33.8                2.8 +/-    0.80       4.5 +/-    0.80  0.030 / 0.030
G26     112.4          52.4                6.9 +/-    0.28       8.4 +/-    0.28  0.070 / 0.080
G31     43.3           37.9                4.0 +/-    0.83       6.1 +/-    0.83  0.060 / 0.080
G32     92.8           13.3                5.4 +/-    1.95      14.1 +/-    1.95  0.090 / 0.110