PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/13-22:12:30
G07     7.2            66.4               11.8 +/-    0.50      12.8 +/-    0.50  0.100 / 0.110
G08     71.9           49.9               11.0 +/-    0.93      13.9 +/-    0.93  0.100 / 0.110
G09     181.3          58.5               14.1 +/-    0.73      16.2 +/-    0.73  0.040 / 0.040
G11     134.6          23.2               13.3 +/-    1.16      27.0 +/-    1.16  0.030 / 0.050
G23     159.8          29.0               13.1 +/-    0.86      23.4 +/-    0.86  0.030 / 0.040
G27     45.8           25.1               10.9 +/-    1.86      21.2 +/-    1.86  0.040 / 0.030
G28     248.2          37.1               13.8 +/-    1.42      21.0 +/-    1.42  0.160 / 0.090
G30     313.0          44.5               11.8 +/-    0.78      16.0 +/-    0.78  0.180 / 0.080