PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-22:12:30
G07     338.6          59.9               12.3 +/-    0.73      14.0 +/-    0.73  0.040 / 0.050
G08     95.9           53.4               12.3 +/-    0.59      14.9 +/-    0.59  0.030 / 0.040
G09     189.5          70.2               13.3 +/-    0.91      14.0 +/-    0.91  0.050 / 0.080
G11     145.6          14.7               14.8 +/-    2.63      37.0 +/-    2.63  0.060 / 0.090
G23     156.2          35.9               13.1 +/-    0.79      20.5 +/-    0.79  0.070 / 0.120
G27     50.8           28.8                8.7 +/-    1.61      15.6 +/-    1.61  0.070 / 0.140
G28     241.0          33.4               13.7 +/-    1.90      22.5 +/-    1.90  0.040 / 0.090
G30     307.9          41.3               10.0 +/-    1.51      14.3 +/-    1.51  0.040 / 0.090