PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/05-18:13:10
G07     36.1           69.8               19.3 +/-    0.91      20.4 +/-    0.91  0.040 / 0.080
G08     56.7           45.9               18.6 +/-    0.31      24.7 +/-    0.31  0.070 / 0.070
G09     179.1          41.6               21.6 +/-    1.38      30.6 +/-    1.38  0.040 / 0.070
G11     124.7          32.1               20.7 +/-    0.99      34.8 +/-    0.99  0.040 / 0.060
G18     108.7          14.1               20.0 +/-    2.04      50.8 +/-    2.04  0.060 / 0.080
G27     37.9           10.7               14.6 +/-    1.23      40.1 +/-    1.23  0.050 / 0.080
G28     269.4          50.4               20.4 +/-    0.84      25.6 +/-    0.84  0.030 / 0.040
G30     329.1          57.6               19.1 +/-    0.93      22.2 +/-    0.93  0.030 / 0.040