PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/03-05:43:00
G10     247.7          24.0                5.5 +/-    1.56      11.0 +/-    1.56  0.130 / 0.500
G13     57.2           32.0                5.2 +/-    0.71       8.7 +/-    0.71  0.140 / 0.580
G15     92.9           57.6                4.6 +/-    0.42       5.4 +/-    0.42  0.040 / 0.040
G16     298.6          15.6                2.9 +/-    3.10       7.0 +/-    3.10  0.040 / 0.040
G20     309.8          71.5                4.4 +/-    0.94       4.6 +/-    0.94  0.090 / 0.200
G21     329.3          57.7                3.0 +/-    0.84       3.4 +/-    0.84  0.060 / 0.130
G26     269.9          17.0                6.3 +/-    1.38      14.8 +/-    1.38  0.030 / 0.060
G29     164.0          54.3                6.5 +/-    1.18       7.8 +/-    1.18  0.040 / 0.050