PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/16-17:27:50
G07     342.9          61.3               11.7 +/-    0.39      13.1 +/-    0.39  0.030 / 0.040
G08     98.3           51.4               13.6 +/-    0.39      16.9 +/-    0.39  0.040 / 0.040
G09     195.7          75.2               12.2 +/-    0.95      12.6 +/-    0.95  0.140 / 0.250
G11     144.9          13.9               12.9 +/-    1.57      32.9 +/-    1.57  0.180 / 0.320
G16     46.4           10.6               10.3 +/-    2.44      28.5 +/-    2.44  0.050 / 0.080
G23     155.5          42.4               13.2 +/-    0.73      18.5 +/-    0.73  0.060 / 0.080
G27     57.1           33.1               10.3 +/-    1.10      17.0 +/-    1.10  0.030 / 0.020
G28     235.6          25.1               14.5 +/-    1.49      28.4 +/-    1.49  0.030 / 0.030
G30     302.4          36.2               12.1 +/-    1.72      18.9 +/-    1.72  0.060 / 0.090