PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/26-11:43:00
G05     48.8           16.5                2.0 +/-    2.52       4.8 +/-    2.52  0.090 / 0.230
G10     235.9          11.4               -6.4 +/-   29.41     -17.3 +/-   29.41  0.110 / 0.230
G13     77.6           37.0                5.1 +/-    1.06       7.8 +/-    1.06  0.110 / 0.180
G15     122.2          52.0                6.0 +/-    0.84       7.4 +/-    0.84  0.180 / 0.240
G16     316.5          10.9               -1.1 +/-   11.52      -2.9 +/-   11.52  0.120 / 0.510
G20     18.4           71.3                4.7 +/-    0.36       5.0 +/-    0.36  0.120 / 0.380
G21     315.2          49.2                2.8 +/-    0.92       3.6 +/-    0.92  0.120 / 0.070
G25     200.2          11.4                2.1 +/-    2.80       5.8 +/-    2.80  0.060 / 0.070
G26     288.8          20.2                5.0 +/-    1.44      11.0 +/-    1.44  0.040 / 0.030
G29     153.6          70.4                7.6 +/-    0.59       8.0 +/-    0.59  0.040 / 0.030