PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/29-09:58:00
G01     112.5          22.3                4.5 +/-    0.92       9.4 +/-    0.92  0.040 / 0.060
G07     98.3           60.5                4.8 +/-    0.72       5.4 +/-    0.72  0.040 / 0.050
G08     42.5           23.7                1.0 +/-    1.19       2.0 +/-    1.19  0.080 / 0.190
G09     174.9          17.7                5.6 +/-    0.57      12.9 +/-    0.57  0.090 / 0.170
G11     95.4           40.7                4.7 +/-    0.92       6.7 +/-    0.92  0.030 / 0.050
G13     314.9          23.0                2.8 +/-    2.40       5.7 +/-    2.40  0.040 / 0.040
G17     203.1          34.2                8.5 +/-    1.21      13.7 +/-    1.21  0.080 / 0.100
G28     307.3          59.8                5.0 +/-    0.99       5.7 +/-    0.99  0.080 / 0.130
G30     359.5          73.4                4.7 +/-    0.95       4.8 +/-    0.95  0.070 / 0.090