PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/21-06:27:50
G01     112.3          20.9                5.2 +/-    1.41      11.2 +/-    1.41  0.040 / 0.030
G07     94.0           62.7                5.9 +/-    0.87       6.6 +/-    0.87  0.030 / 0.030
G08     43.3           27.6                3.7 +/-    1.01       6.9 +/-    1.01  0.030 / 0.040
G09     174.6          19.2                7.0 +/-    1.79      15.7 +/-    1.79  0.030 / 0.030
G11     102.5          43.4                6.6 +/-    0.61       9.1 +/-    0.61  0.040 / 0.080
G13     314.2          24.9                3.4 +/-    1.06       6.7 +/-    1.06  0.040 / 0.070
G17     202.4          29.1                6.9 +/-    2.14      12.2 +/-    2.14  0.100 / 0.250
G28     290.4          54.4                6.7 +/-    0.92       8.1 +/-    0.92  0.100 / 0.190
G30     349.3          71.4                5.8 +/-    1.11       6.1 +/-    1.11  0.040 / 0.060