PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/25-00:27:50
G10     257.4          32.0               13.5 +/-    0.41      22.8 +/-    0.41  0.130 / 0.400
G13     47.4           25.2                9.5 +/-    0.90      18.4 +/-    0.90  0.160 / 0.360
G15     75.6           56.8               10.1 +/-    0.44      11.8 +/-    0.44  0.120 / 0.420
G16     286.7          14.9                7.3 +/-    2.06      18.2 +/-    2.06  0.120 / 0.300
G20     266.3          37.9               10.3 +/-    0.73      15.5 +/-    0.73  0.090 / 0.100
G21     342.4          64.8                8.9 +/-    0.84       9.7 +/-    0.84  0.090 / 0.100
G26     259.4          12.4               13.0 +/-    1.64      34.3 +/-    1.64  0.040 / 0.040
G27     322.0          11.0               -6.7 +/-   34.38     -18.4 +/-   34.38  0.050 / 0.050
G29     167.0          42.6               12.4 +/-    1.37      17.3 +/-    1.37  0.040 / 0.060