PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/25-15:58:00
G07     339.4          60.2               11.2 +/-    0.38      12.7 +/-    0.38  0.050 / 0.040
G08     94.0           53.3               12.1 +/-    0.65      14.7 +/-    0.65  0.040 / 0.040
G09     186.0          68.5               12.1 +/-    0.32      12.9 +/-    0.32  0.030 / 0.040
G11     143.4          16.0               12.8 +/-    1.73      31.1 +/-    1.73  0.030 / 0.040
G23     155.6          32.9               12.2 +/-    1.35      20.2 +/-    1.35  0.100 / 0.070
G27     50.7           28.9               10.6 +/-    2.01      19.0 +/-    2.01  0.090 / 0.090
G28     241.3          33.4               11.5 +/-    1.21      18.8 +/-    1.21  0.070 / 0.130
G30     306.1          38.7               12.0 +/-    1.42      17.9 +/-    1.42  0.060 / 0.080