PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/23-13:43:10
G07     37.4           68.4                9.4 +/-    0.95      10.0 +/-    0.95  0.050 / 0.140
G08     61.4           47.8                8.2 +/-    1.30      10.7 +/-    1.30  0.050 / 0.100
G09     180.2          47.9               10.0 +/-    0.62      12.9 +/-    0.62  0.080 / 0.120
G11     127.4          30.2               10.3 +/-    1.59      18.0 +/-    1.59  0.090 / 0.140
G18     111.0          11.7                7.8 +/-    2.61      20.9 +/-    2.61  0.040 / 0.040
G23     159.3          14.4                8.0 +/-    2.34      20.2 +/-    2.34  0.030 / 0.040
G27     39.8           15.9                7.2 +/-    2.52      17.5 +/-    2.52  0.090 / 0.200
G28     258.0          42.3                9.0 +/-    2.46      12.7 +/-    2.46  0.110 / 0.340
G30     325.3          55.1                8.0 +/-    0.58       9.5 +/-    0.58  0.140 / 0.460