PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/18-19:28:10
G03     213.1          60.4               14.6 +/-    1.61      16.5 +/-    1.61  0.050 / 0.050
G07     253.9          12.4               14.0 +/-    2.96      37.2 +/-    2.96  0.040 / 0.050
G09     308.0          23.9               11.8 +/-    1.63      23.6 +/-    1.63  0.030 / 0.030
G14     106.3          9.8                13.9 +/-    1.80      38.9 +/-    1.80  0.030 / 0.030
G16     108.1          64.1               15.6 +/-    0.99      17.2 +/-    0.99  0.060 / 0.230
G22     188.7          45.1               14.9 +/-    0.93      20.1 +/-    0.93  0.060 / 0.140
G23     328.1          57.7               13.4 +/-    0.85      15.5 +/-    0.85  0.180 / 0.400
G26     57.1           45.9               11.4 +/-    0.51      15.1 +/-    0.51  0.150 / 0.420
G31     57.2           12.6                8.7 +/-    1.46      23.1 +/-    1.46  0.040 / 0.040