PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/10-14:57:30
G07     343.8          61.6                9.8 +/-    0.75      11.0 +/-    0.75  0.070 / 0.090
G08     88.2           53.2               10.2 +/-    0.69      12.4 +/-    0.69  0.070 / 0.090
G09     183.5          65.3               10.5 +/-    1.39      11.4 +/-    1.39  0.040 / 0.040
G11     141.4          17.7               10.4 +/-    0.80      24.2 +/-    0.80  0.030 / 0.050
G23     156.6          31.2               13.1 +/-    1.58      22.3 +/-    1.58  0.040 / 0.050
G27     48.8           27.5                7.4 +/-    1.16      13.7 +/-    1.16  0.040 / 0.060
G28     243.5          35.2               12.1 +/-    1.27      19.1 +/-    1.27  0.050 / 0.120
G30     307.9          40.0                9.2 +/-    1.14      13.4 +/-    1.14  0.060 / 0.120