PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/11-21:57:50
G07     303.4          44.5                8.2 +/-    1.61      11.1 +/-    1.61  0.040 / 0.080
G08     133.2          38.0               11.8 +/-    1.02      17.7 +/-    1.02  0.050 / 0.080
G09     311.0          74.7                8.2 +/-    0.88       8.5 +/-    0.88  0.200 / 0.540
G16     41.7           27.9                6.2 +/-    1.26      11.3 +/-    1.26  0.160 / 0.450
G23     141.0          65.5                9.0 +/-    0.75       9.8 +/-    0.75  0.050 / 0.070
G27     82.0           36.8                8.9 +/-    0.89      13.7 +/-    0.89  0.040 / 0.080
G28     222.8          10.8               -5.0 +/-   17.59     -13.7 +/-   17.59  0.040 / 0.060
G30     285.4          23.9                8.8 +/-    1.72      17.5 +/-    1.72  0.040 / 0.060