PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/15-15:27:40
G01     317.7          20.7                7.1 +/-    2.07      15.3 +/-    2.07  0.120 / 0.240
G08     256.8          11.4                6.8 +/-    7.50      18.4 +/-    7.50  0.130 / 0.370
G10     84.7           51.6                4.1 +/-    1.44       5.0 +/-    1.44  0.060 / 0.060
G11     302.2          22.8                7.0 +/-    1.54      14.4 +/-    1.54  0.050 / 0.060
G14     303.9          70.4                5.8 +/-    0.60       6.1 +/-    0.60  0.030 / 0.050
G22     302.7          14.2                6.4 +/-    2.12      16.2 +/-    2.12  0.040 / 0.050
G25     98.9           10.0               -4.8 +/-   36.59     -13.3 +/-   36.59  0.220 / 0.330
G31     174.6          46.5                9.0 +/-    0.79      11.8 +/-    0.79  0.230 / 0.360
G32     15.1           64.4                6.2 +/-    0.99       6.8 +/-    0.99  0.280 / 0.340