PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/26-10:57:40
G01     121.5          16.0                4.9 +/-   41.07      12.0 +/-   41.07  0.030 / 0.030
G07     73.5           67.6                6.6 +/-   40.62       7.1 +/-   40.62  0.030 / 0.040
G08     45.4           31.7                3.8 +/-   37.83       6.4 +/-   37.83  0.020 / 0.040
G09     175.4          26.4                1.0 +/-   34.52       1.8 +/-   34.52  0.020 / 0.040
G11     108.4          38.8                2.3 +/-   32.88       3.4 +/-   32.88  0.110 / 0.190
G13     318.8          17.5               -0.3 +/-   33.18      -0.7 +/-   33.18  0.140 / 0.240
G17     200.3          23.4                2.6 +/-    6.30       5.4 +/-    6.30  0.090 / 0.260
G18     96.4           19.7                3.7 +/-   38.81       8.3 +/-   38.81  0.090 / 0.240
G28     287.1          56.0                1.6 +/-   32.59       1.9 +/-   32.59  0.080 / 0.170
G30     338.7          64.8               -0.9 +/-    5.37      -0.9 +/-    5.37  0.080 / 0.140