PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/05-20:28:10
G01     67.7           32.5               22.5 +/-    1.07      37.4 +/-    1.07  0.040 / 0.090
G07     139.0          29.0               25.5 +/-    1.38      45.7 +/-    1.38  0.050 / 0.080
G11     52.6           29.8               19.4 +/-    1.00      34.0 +/-    1.00  0.050 / 0.090
G13     271.3          37.0               25.0 +/-    1.11      38.3 +/-    1.11  0.050 / 0.070
G15     300.4          15.7               17.3 +/-    2.12      42.3 +/-    2.12  0.100 / 0.350
G17     236.6          67.4               27.2 +/-    0.99      29.2 +/-    0.99  0.100 / 0.400
G18     47.3           17.1               16.1 +/-    0.58      38.1 +/-    0.58  0.030 / 0.050
G19     226.3          43.3               28.4 +/-    1.84      39.3 +/-    1.84  0.030 / 0.050
G28     24.8           58.5               21.5 +/-    0.31      24.8 +/-    0.31  0.050 / 0.110
G30     138.1          57.9               25.7 +/-    0.66      29.8 +/-    0.66  0.070 / 0.140