PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/09-20:13:00
G03     210.1          57.5                5.5 +/-   26.92       6.4 +/-   26.92  0.190 / 0.280
G07     256.3          14.5                6.9 +/-   28.72      17.5 +/-   28.72  0.220 / 0.300
G09     309.6          26.5                4.4 +/-   28.12       8.3 +/-   28.12  0.040 / 0.080
G16     100.3          65.0                6.4 +/-   26.82       7.0 +/-   26.82  0.050 / 0.080
G22     187.8          42.0                6.2 +/-   24.72       8.7 +/-   24.72  0.130 / 0.300
G23     330.6          60.1                3.8 +/-   27.73       4.3 +/-   27.73  0.120 / 0.330
G26     54.2           43.8                4.2 +/-   26.46       5.7 +/-   26.46  0.100 / 0.170
G27     133.8          10.5               -9.7 +/-   35.86     -26.7 +/-   35.86  0.190 / 0.190
G31     59.0           10.6                5.6 +/-   28.09      15.3 +/-   28.09  0.050 / 0.050