PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/14-08:27:50
G01     123.7          14.3                3.5 +/-   38.97       8.8 +/-   38.97  0.030 / 0.040
G07     68.3           67.5               -3.7 +/-   38.54      -3.9 +/-   38.54  0.030 / 0.040
G08     47.2           34.8               -0.4 +/-   36.14      -0.7 +/-   36.14  0.040 / 0.060
G09     176.9          31.0                2.1 +/-   36.92       3.6 +/-   36.92  0.040 / 0.060
G11     112.3          36.4                0.8 +/-   37.95       1.3 +/-   37.95  0.070 / 0.110
G13     320.7          13.2               -1.0 +/-   38.40      -2.6 +/-   38.40  0.070 / 0.100
G17     199.9          20.9                0.7 +/-   37.35       1.5 +/-   37.35  0.060 / 0.130
G28     283.7          55.2               -2.3 +/-   38.32      -2.7 +/-   38.32  0.100 / 0.130
G30     337.4          63.2                0.7 +/-   14.11       0.8 +/-   14.11  0.040 / 0.070