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                5.7 +/-    1.42      11.9 +/-    1.42  0.180 / 0.180
G07     99.3           59.4                6.8 +/-    0.76       7.7 +/-    0.76  0.140 / 0.270
G08     42.5           23.4                3.1 +/-    1.86       6.2 +/-    1.86  0.030 / 0.020
G09     174.1          16.8                5.1 +/-    2.64      12.2 +/-    2.64  0.030 / 0.010
G11     94.2           40.3                4.6 +/-    0.87       6.6 +/-    0.87  0.030 / 0.030
G13     314.9          23.0                3.9 +/-    1.54       8.0 +/-    1.54  0.040 / 0.030
G17     203.0          34.5                7.4 +/-    0.91      11.8 +/-    0.91  0.080 / 0.250
G28     307.0          59.6                4.7 +/-    0.59       5.3 +/-    0.59  0.090 / 0.140
G30     356.7          72.8                5.1 +/-    1.39       5.3 +/-    1.39  0.100 / 0.100