PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/08-11:57:20
G10     291.7          50.3                3.1 +/-    2.97       3.9 +/-    2.97  0.090 / 0.130
G15     46.9           31.7                2.1 +/-    1.20       3.5 +/-    1.20  0.100 / 0.130
G20     342.4          65.4                2.6 +/-    0.47       2.8 +/-    0.47  0.030 / 0.030
G21     93.3           71.8                4.7 +/-    0.62       4.9 +/-    0.62  0.030 / 0.020
G24     99.3           24.5                5.6 +/-    1.14      11.1 +/-    1.14  0.120 / 0.090
G27     307.1          30.3                4.1 +/-    1.43       7.2 +/-    1.43  0.110 / 0.080
G32     209.3          25.0                3.7 +/-    1.81       7.2 +/-    1.81  0.050 / 0.080