PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/31-16:28:10
G01     317.8          20.6                5.9 +/-    2.44      12.8 +/-    2.44  0.170 / 0.230
G08     256.3          11.5                9.1 +/-    8.09      24.6 +/-    8.09  0.160 / 0.350
G10     84.5           51.8                8.0 +/-    1.24       9.8 +/-    1.24  0.040 / 0.040
G11     301.9          23.1                6.3 +/-    0.98      12.9 +/-    0.98  0.040 / 0.030
G14     304.7          70.6                7.7 +/-    0.47       8.1 +/-    0.47  0.040 / 0.050
G22     302.4          13.5                6.3 +/-    3.69      16.3 +/-    3.69  0.050 / 0.060
G25     98.8           9.9                -8.4 +/-   37.42     -23.4 +/-   37.42  0.130 / 0.240
G31     175.2          45.9               11.6 +/-    1.03      15.4 +/-    1.03  0.230 / 0.350
G32     14.2           64.8                7.3 +/-    0.56       8.0 +/-    0.56  0.220 / 0.210