PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/25-09:28:10
G01     74.6           32.4                6.5 +/-    1.12      10.8 +/-    1.12  0.070 / 0.070
G07     134.2          33.7                7.4 +/-    0.92      12.0 +/-    0.92  0.040 / 0.070
G11     57.7           35.8                5.2 +/-    1.09       8.2 +/-    1.09  0.040 / 0.050
G13     279.1          39.0                7.2 +/-    1.78      10.7 +/-    1.78  0.050 / 0.030
G15     306.6          14.0                2.8 +/-    2.07       7.1 +/-    2.07  0.120 / 0.100
G17     224.2          62.9                6.8 +/-    1.23       7.6 +/-    1.23  0.080 / 0.070
G18     52.1           20.1                4.1 +/-    3.73       9.1 +/-    3.73  0.110 / 0.180
G19     219.8          39.8                6.4 +/-    1.52       9.4 +/-    1.52  0.180 / 0.250
G28     355.5          61.5                4.6 +/-    0.81       5.2 +/-    0.81  0.040 / 0.030
G30     129.9          68.4                7.3 +/-    0.96       7.7 +/-    0.96  0.030 / 0.030