PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/07-19:58:10
G01     112.0          22.2               12.2 +/-    2.03      25.6 +/-    2.03  0.030 / 0.040
G07     102.4          56.7               13.0 +/-    0.37      15.3 +/-    0.37  0.030 / 0.040
G08     42.4           24.0               10.1 +/-    1.68      20.2 +/-    1.68  0.240 / 0.250
G09     176.4          19.9               13.3 +/-    2.57      29.4 +/-    2.57  0.150 / 0.220
G11     94.7           42.5               13.7 +/-    0.63      19.2 +/-    0.63  0.060 / 0.050
G13     313.2          25.7                9.4 +/-    1.16      18.1 +/-    1.16  0.050 / 0.070
G17     202.8          33.1               13.2 +/-    1.28      21.8 +/-    1.28  0.140 / 0.250
G18     83.7           22.7               11.7 +/-    1.41      24.0 +/-    1.41  0.130 / 0.210
G28     299.3          57.6               10.6 +/-    1.26      12.4 +/-    1.26  0.030 / 0.030
G30     7.3            75.3               11.8 +/-    0.58      12.2 +/-    0.58  0.040 / 0.030