PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/09-03:58:00
G02     39.8           49.6                5.1 +/-    1.57       6.4 +/-    1.57  0.040 / 0.070
G05     122.7          66.4                6.0 +/-    0.37       6.5 +/-    0.37  0.030 / 0.040
G06     56.9           12.0                3.5 +/-    1.44       9.5 +/-    1.44  0.030 / 0.040
G12     194.8          62.0                6.9 +/-    0.47       7.7 +/-    0.47  0.030 / 0.030
G20     207.4          10.9               -5.8 +/-    9.67     -15.8 +/-    9.67  0.050 / 0.040
G25     288.9          55.8                4.8 +/-    1.21       5.6 +/-    1.21  0.040 / 0.040
G29     311.2          32.1                5.3 +/-    2.33       9.0 +/-    2.33  0.330 / 0.330