PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/15-04:13:10
G01     62.0           31.1                4.4 +/-    0.84       7.5 +/-    0.84  0.060 / 0.060
G06     183.0          10.7              -15.5 +/-   31.81     -42.5 +/-   31.81  0.050 / 0.050
G07     141.5          23.8                5.8 +/-    1.28      11.6 +/-    1.28  0.090 / 0.200
G11     49.9           26.2                3.8 +/-    1.72       7.2 +/-    1.72  0.090 / 0.170
G13     266.0          35.6                4.9 +/-    1.61       7.7 +/-    1.61  0.030 / 0.030
G15     294.8          16.8                1.2 +/-    1.12       3.0 +/-    1.12  0.030 / 0.040
G17     253.1          75.1                4.4 +/-    0.83       4.6 +/-    0.83  0.050 / 0.140
G19     231.2          50.1                6.9 +/-    0.69       8.6 +/-    0.69  0.080 / 0.150
G28     34.1           56.8                2.7 +/-    0.45       3.2 +/-    0.45  0.170 / 0.270
G30     141.7          50.9                5.9 +/-    0.98       7.4 +/-    0.98  0.050 / 0.070