PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/07-19:12:50
G07     57.6           67.3               12.0 +/-    0.54      12.9 +/-    0.54  0.030 / 0.030
G08     52.7           41.2               10.1 +/-    1.04      14.4 +/-    1.04  0.030 / 0.030
G09     179.2          41.0               13.9 +/-    0.60      19.8 +/-    0.60  0.210 / 0.290
G11     120.3          34.0               14.4 +/-    0.92      23.3 +/-    0.92  0.210 / 0.280
G17     198.8          12.3               10.5 +/-   14.21      27.8 +/-   14.21  0.110 / 0.150
G18     104.4          14.9               12.1 +/-    2.14      30.2 +/-    2.14  0.100 / 0.140
G23     160.8          11.4               14.8 +/-    4.20      40.2 +/-    4.20  0.080 / 0.060
G27     38.1           11.6               10.0 +/-    3.04      26.9 +/-    3.04  0.080 / 0.070
G28     266.8          47.6               11.6 +/-    3.65      15.0 +/-    3.65  0.030 / 0.040
G30     330.3          58.8               10.4 +/-    0.61      12.0 +/-    0.61  0.040 / 0.030