PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/22-05:57:50
G10     292.8          50.1                4.8 +/-    1.19       6.1 +/-    1.19  0.060 / 0.040
G15     46.7           31.1                4.2 +/-    0.79       7.3 +/-    0.79  0.070 / 0.050
G20     27.4           60.8                5.0 +/-    0.58       5.6 +/-    0.58  0.060 / 0.090
G21     84.0           76.1                5.5 +/-    1.00       5.6 +/-    1.00  0.060 / 0.070
G24     100.5          25.3                5.1 +/-    1.45       9.9 +/-    1.45  0.050 / 0.040
G27     303.3          33.0                5.3 +/-    1.43       8.8 +/-    1.43  0.050 / 0.040
G29     168.6          10.8                5.3 +/-    1.81      14.6 +/-    1.81  0.080 / 0.120
G32     209.1          30.7                6.1 +/-    2.70      10.5 +/-    2.70  0.060 / 0.130