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                3.5 +/-    2.47       7.2 +/-    2.47  0.120 / 0.170
G07     98.3           60.5                5.1 +/-    0.83       5.8 +/-    0.83  0.110 / 0.120
G08     42.5           23.7                1.9 +/-    2.81       3.9 +/-    2.81  0.040 / 0.020
G09     174.9          17.7                4.0 +/-    2.22       9.3 +/-    2.22  0.030 / 0.030
G11     95.4           40.7                4.8 +/-    0.95       6.9 +/-    0.95  0.030 / 0.040
G13     314.9          23.0                5.0 +/-    1.18      10.2 +/-    1.18  0.030 / 0.040
G17     203.1          34.2                8.6 +/-    1.29      13.9 +/-    1.29  0.120 / 0.110
G28     307.3          59.8                4.0 +/-    0.73       4.5 +/-    0.73  0.080 / 0.080
G30     359.5          73.4                5.1 +/-    1.48       5.3 +/-    1.48  0.090 / 0.110