PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/16-12:58:00
G01     112.3          22.3                6.7 +/-    0.95      14.0 +/-    0.95  0.090 / 0.220
G07     99.3           59.4                5.2 +/-    0.50       5.9 +/-    0.50  0.080 / 0.240
G08     42.5           23.4                2.9 +/-    0.41       5.8 +/-    0.41  0.030 / 0.030
G09     174.1          16.8                4.3 +/-    0.95      10.2 +/-    0.95  0.030 / 0.030
G11     94.2           40.3                4.8 +/-    0.66       7.0 +/-    0.66  0.030 / 0.030
G13     314.9          23.0                1.4 +/-    3.37       2.9 +/-    3.37  0.040 / 0.040
G17     203.0          34.5                7.6 +/-    1.15      12.3 +/-    1.15  0.090 / 0.190
G28     307.0          59.6                3.4 +/-    0.88       3.9 +/-    0.88  0.110 / 0.190
G30     356.7          72.8                3.4 +/-    0.76       3.6 +/-    0.76  0.070 / 0.090