PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/08-17:28:00
G07     319.3          53.7               10.0 +/-    0.72      12.1 +/-    0.72  0.060 / 0.050
G08     120.5          44.3               12.3 +/-    0.93      16.7 +/-    0.93  0.040 / 0.050
G09     283.4          81.6                8.9 +/-    0.14       9.0 +/-    0.14  0.140 / 0.250
G16     42.6           23.5                7.7 +/-    2.15      15.6 +/-    2.15  0.090 / 0.330
G23     148.3          58.8               12.9 +/-    0.85      14.8 +/-    0.85  0.040 / 0.030
G27     74.9           37.7               10.9 +/-    0.95      16.5 +/-    0.95  0.040 / 0.030
G28     226.2          12.9               11.3 +/-   13.09      29.6 +/-   13.09  0.070 / 0.070
G30     290.3          26.3               10.2 +/-    1.44      19.3 +/-    1.44  0.070 / 0.060