PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/15-22:57:50
G10     257.4          32.0               14.6 +/-    2.71      24.5 +/-    2.71  0.200 / 0.210
G13     47.4           25.1               10.2 +/-    3.02      19.9 +/-    3.02  0.300 / 0.270
G15     76.8           57.4               11.0 +/-    0.86      12.8 +/-    0.86  0.060 / 0.090
G16     286.5          15.0                9.2 +/-    2.66      22.9 +/-    2.66  0.110 / 0.080
G20     260.9          26.4               15.1 +/-    2.66      28.6 +/-    2.66  0.180 / 0.420
G21     342.2          64.7               10.9 +/-    0.92      11.9 +/-    0.92  0.210 / 0.440
G26     259.3          12.4               13.2 +/-    7.69      35.0 +/-    7.69  0.410 / 0.190
G27     322.0          10.9              -10.1 +/-   27.78     -27.8 +/-   27.78  0.280 / 0.300
G29     167.0          42.7               11.9 +/-    0.98      16.6 +/-    0.98  0.110 / 0.060