PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/09-00:57:40
G10     243.9          20.7               13.2 +/-    2.76      28.5 +/-    2.76  0.130 / 0.720
G13     62.0           33.8                8.6 +/-    1.20      13.9 +/-    1.20  0.120 / 0.610
G15     107.4          57.7               12.2 +/-    0.55      14.1 +/-    0.55  0.040 / 0.070
G16     302.7          15.7                4.8 +/-    3.36      11.8 +/-    3.36  0.040 / 0.070
G20     254.8          35.5                9.2 +/-    1.76      14.5 +/-    1.76  0.080 / 0.140
G21     323.3          53.8               11.7 +/-    1.42      14.1 +/-    1.42  0.080 / 0.140
G26     274.4          18.6                8.8 +/-    0.60      20.0 +/-    0.60  0.040 / 0.050
G29     162.6          60.6               13.0 +/-    0.62      14.7 +/-    0.62  0.030 / 0.040