PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/23-04:27:30
G07     339.9          60.2                5.0 +/-    0.39       5.7 +/-    0.39  0.120 / 0.170
G08     91.4           52.1                6.6 +/-    0.75       8.1 +/-    0.75  0.120 / 0.140
G09     187.3          70.0                8.3 +/-    0.67       8.8 +/-    0.67  0.040 / 0.030
G11     143.2          15.0                6.6 +/-    1.38      16.5 +/-    1.38  0.030 / 0.030
G23     157.0          39.2                7.9 +/-    0.80      11.7 +/-    0.80  0.060 / 0.050
G27     51.1           28.9                5.7 +/-    1.94      10.2 +/-    1.94  0.050 / 0.050
G28     240.6          33.0                5.6 +/-    1.26       9.2 +/-    1.26  0.080 / 0.110
G30     305.3          38.0                4.1 +/-    1.77       6.2 +/-    1.77  0.060 / 0.150