PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/16-20:12:30
G07     17.8           67.4               14.6 +/-    0.99      15.6 +/-    0.99  0.030 / 0.040
G08     67.9           49.1               14.5 +/-    0.63      18.5 +/-    0.63  0.030 / 0.040
G09     181.3          55.7               18.9 +/-    0.57      22.4 +/-    0.57  0.060 / 0.090
G11     132.4          25.3               21.2 +/-    3.14      41.1 +/-    3.14  0.070 / 0.090
G23     160.0          25.2               19.1 +/-    2.79      37.2 +/-    2.79  0.050 / 0.040
G27     43.7           22.5               11.1 +/-    2.04      22.9 +/-    2.04  0.050 / 0.040
G28     251.1          38.9               18.6 +/-    1.50      27.6 +/-    1.50  0.060 / 0.050
G30     316.3          47.6               14.4 +/-    0.83      18.7 +/-    0.83  0.060 / 0.050