PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/04-05:12:50
G02     59.2           32.2                3.7 +/-    0.38       6.2 +/-    0.38  0.050 / 0.090
G05     59.4           61.0                4.4 +/-    0.38       5.0 +/-    0.38  0.050 / 0.080
G12     185.9          35.1                7.4 +/-    2.33      11.7 +/-    2.33  0.030 / 0.040
G13     130.1          13.9                5.5 +/-    2.64      14.0 +/-    2.64  0.030 / 0.040
G15     163.9          11.2                1.8 +/-   16.04       4.9 +/-   16.04  0.050 / 0.080
G20     214.1          36.5                9.0 +/-    1.72      13.9 +/-    1.72  0.050 / 0.090
G21     270.0          16.7                6.1 +/-    1.64      14.6 +/-    1.64  0.080 / 0.120
G25     241.2          53.1                6.7 +/-    1.01       8.1 +/-    1.01  0.080 / 0.120
G29     327.2          52.9                3.1 +/-    0.74       3.8 +/-    0.74  0.130 / 0.470