PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/15-01:28:10
G10     266.4          37.9               12.0 +/-    1.06      18.0 +/-    1.06  0.250 / 0.140
G13     42.1           18.7                8.7 +/-    2.86      19.8 +/-    2.86  0.170 / 0.130
G15     61.5           51.1               10.6 +/-    0.63      13.2 +/-    0.63  0.040 / 0.030
G16     278.2          12.4               10.5 +/-    1.89      27.7 +/-    1.89  0.040 / 0.030
G20     280.5          48.9               10.3 +/-    0.86      13.2 +/-    0.86  0.140 / 0.400
G21     358.9          71.1               11.8 +/-    0.60      12.4 +/-    0.60  0.230 / 0.390
G24     119.7          14.0               11.1 +/-    1.52      28.3 +/-    1.52  0.180 / 0.260
G27     318.9          18.4               10.0 +/-    1.47      22.9 +/-    1.47  0.150 / 0.240
G29     168.3          32.8               12.6 +/-    1.11      20.8 +/-    1.11  0.180 / 0.380