PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-00:27:40
G02     83.0           14.5                9.7 +/-    3.24      24.5 +/-    3.24  0.060 / 0.120
G05     44.8           32.6                8.6 +/-    1.26      14.3 +/-    1.26  0.080 / 0.100
G13     99.6           32.9               12.1 +/-    0.95      20.0 +/-    0.95  0.120 / 0.090
G15     147.1          36.8               13.1 +/-    1.18      20.0 +/-    1.18  0.100 / 0.110
G20     233.3          17.5               12.8 +/-    2.27      29.9 +/-    2.27  0.070 / 0.140
G21     295.8          34.6               10.0 +/-    1.50      16.1 +/-    1.50  0.070 / 0.110
G25     209.5          26.5               13.9 +/-    1.22      26.3 +/-    1.22  0.040 / 0.060
G26     304.8          19.0                8.3 +/-    1.41      18.6 +/-    1.41  0.040 / 0.070
G29     0.3            84.3                9.8 +/-    0.30       9.9 +/-    0.30  0.100 / 0.180