PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/23-20:13:00
G07     54.5           67.7               12.4 +/-    0.93      13.3 +/-    0.93  0.030 / 0.030
G08     53.0           41.3               10.6 +/-    0.98      15.2 +/-    0.98  0.030 / 0.040
G09     179.1          41.5               15.5 +/-    0.82      22.0 +/-    0.82  0.080 / 0.070
G11     120.9          33.6               14.2 +/-    1.00      23.1 +/-    1.00  0.070 / 0.050
G17     198.6          12.1               12.7 +/-   22.49      33.9 +/-   22.49  0.090 / 0.180
G18     104.6          14.6               13.5 +/-    1.21      33.8 +/-    1.21  0.290 / 0.150
G23     160.9          12.4               14.7 +/-    1.80      38.9 +/-    1.80  0.090 / 0.090
G27     38.4           12.3                9.1 +/-    1.59      24.2 +/-    1.59  0.080 / 0.100
G28     266.2          47.4               13.8 +/-    3.68      17.9 +/-    3.68  0.030 / 0.040
G30     329.0          57.9               12.1 +/-    0.58      14.1 +/-    0.58  0.030 / 0.030