PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/18-03:27:50
G01     320.6          11.9              -14.1 +/-   26.08     -37.7 +/-   26.08  0.020 / 0.020
G08     262.4          16.7                9.4 +/-    1.07      22.4 +/-    1.07  0.030 / 0.030
G10     66.0           57.8                6.2 +/-    0.91       7.2 +/-    0.91  0.230 / 0.370
G11     307.7          21.1                4.9 +/-    2.64      10.4 +/-    2.64  0.190 / 0.250
G14     278.9          69.3                5.1 +/-    0.79       5.4 +/-    0.79  0.040 / 0.030
G18     94.4           35.2                5.6 +/-    1.06       8.9 +/-    1.06  0.030 / 0.040
G21     154.6          11.8                5.4 +/-    2.87      14.6 +/-    2.87  0.220 / 0.270
G27     227.9          13.2                8.6 +/-    2.50      22.5 +/-    2.50  0.230 / 0.330
G31     178.2          33.3                7.5 +/-    1.25      12.3 +/-    1.25  0.200 / 0.520
G32     343.9          72.8                5.6 +/-    0.68       5.9 +/-    0.68  0.120 / 0.220