PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/23-16:57:50
G07     342.3          61.2               11.0 +/-    0.57      12.3 +/-    0.57  0.080 / 0.100
G08     99.8           51.3               11.8 +/-    0.63      14.7 +/-    0.63  0.070 / 0.090
G09     197.2          75.8               11.8 +/-    0.87      12.1 +/-    0.87  0.050 / 0.050
G11     145.3          13.5               11.3 +/-    3.33      29.2 +/-    3.33  0.040 / 0.040
G16     46.3           10.8               10.1 +/-    2.10      27.6 +/-    2.10  0.100 / 0.250
G23     155.1          42.8               12.8 +/-    0.98      17.8 +/-    0.98  0.110 / 0.240
G27     57.6           33.3                9.2 +/-    0.36      15.1 +/-    0.36  0.160 / 0.440
G28     235.1          24.4               11.4 +/-    3.62      22.6 +/-    3.62  0.130 / 0.500
G30     302.1          36.0               10.1 +/-    1.21      15.8 +/-    1.21  0.040 / 0.080