PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/07-19:58:10
G03     226.4          66.3               11.4 +/-    0.53      12.3 +/-    0.53  0.100 / 0.320
G09     304.4          18.8                9.3 +/-    1.50      21.1 +/-    1.50  0.120 / 0.410
G14     101.3          13.9               10.8 +/-    1.70      27.5 +/-    1.70  0.070 / 0.050
G16     124.8          60.6               12.4 +/-    0.80      14.0 +/-    0.80  0.050 / 0.060
G22     192.4          52.6               12.7 +/-    2.91      15.5 +/-    2.91  0.080 / 0.110
G23     321.9          51.7               11.7 +/-    1.11      14.5 +/-    1.11  0.080 / 0.130
G26     65.6           50.4                9.0 +/-    0.68      11.3 +/-    0.68  0.030 / 0.040
G31     53.4           17.7                7.7 +/-    0.68      17.9 +/-    0.68  0.040 / 0.040