PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/10-06:58:10
G10     300.6          52.7                5.6 +/-    0.73       6.8 +/-    0.73  0.060 / 0.110
G15     45.8           26.0                3.5 +/-    0.90       6.7 +/-    0.90  0.080 / 0.090
G20     45.9           52.9                4.6 +/-    0.32       5.6 +/-    0.32  0.040 / 0.040
G21     102.9          72.9                5.3 +/-    0.69       5.5 +/-    0.69  0.040 / 0.040
G24     94.9           27.3                6.8 +/-    0.99      12.7 +/-    0.99  0.080 / 0.120
G27     297.4          35.4                6.4 +/-    1.11      10.0 +/-    1.11  0.070 / 0.140
G32     211.4          36.0                8.5 +/-    0.90      13.2 +/-    0.90  0.040 / 0.040