PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/27-20:12:30
G07     350.3          63.4               14.3 +/-    0.42      15.8 +/-    0.42  0.040 / 0.030
G08     86.1           54.4               14.2 +/-    0.96      17.0 +/-    0.96  0.040 / 0.040
G09     184.2          62.6               15.8 +/-    1.01      17.6 +/-    1.01  0.030 / 0.030
G11     140.6          19.5               19.1 +/-    2.77      42.6 +/-    2.77  0.030 / 0.040
G23     157.4          27.3               17.0 +/-    2.41      31.5 +/-    2.41  0.090 / 0.100
G27     45.9           24.5               11.6 +/-    1.65      22.9 +/-    1.65  0.090 / 0.100
G28     247.4          38.4               15.9 +/-    1.47      23.8 +/-    1.47  0.060 / 0.120
G30     312.9          44.8               12.6 +/-    0.58      17.0 +/-    0.58  0.050 / 0.110