PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/22-00:27:50
G05     47.1           23.2                8.0 +/-    1.22      16.2 +/-    1.22  0.160 / 0.300
G13     83.1           37.3               11.6 +/-    0.68      17.7 +/-    0.68  0.170 / 0.320
G15     134.7          48.3               11.0 +/-    0.58      14.2 +/-    0.58  0.070 / 0.080
G18     241.0          37.1               11.0 +/-    0.99      16.8 +/-    0.99  0.050 / 0.080
G20     26.2           69.3               10.3 +/-    0.58      11.0 +/-    0.58  0.030 / 0.030
G21     308.3          44.0                8.0 +/-    1.30      10.9 +/-    1.30  0.030 / 0.030
G25     198.1          11.8               13.3 +/-    1.36      35.7 +/-    1.36  0.140 / 0.240
G26     293.4          20.1               12.1 +/-    2.16      26.5 +/-    2.16  0.130 / 0.230
G29     151.1          75.5               13.2 +/-    1.30      13.6 +/-    1.30  0.050 / 0.130