PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/30-05:27:50
G10     294.6          50.8                5.3 +/-    1.03       6.7 +/-    1.03  0.050 / 0.050
G15     46.5           30.2                3.4 +/-    1.59       6.0 +/-    1.59  0.040 / 0.050
G20     20.4           62.7                4.1 +/-    0.26       4.5 +/-    0.26  0.070 / 0.090
G21     88.6           75.6                4.8 +/-    0.63       4.9 +/-    0.63  0.080 / 0.080
G24     99.0           25.8                4.5 +/-    0.43       8.7 +/-    0.43  0.060 / 0.150
G27     302.1          33.6                5.8 +/-    1.66       9.4 +/-    1.66  0.080 / 0.100
G32     209.5          32.0                5.4 +/-    1.26       9.0 +/-    1.26  0.040 / 0.110