PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/14-22:42:50
G07     49.4           68.4                9.1 +/-    0.87       9.7 +/-    0.87  0.100 / 0.340
G08     53.1           41.2                7.9 +/-    0.91      11.2 +/-    0.91  0.110 / 0.320
G09     178.5          41.4               10.8 +/-    0.92      15.3 +/-    0.92  0.090 / 0.180
G11     121.3          33.2               11.6 +/-    1.24      19.0 +/-    1.24  0.070 / 0.250
G17     198.4          12.1                8.9 +/-   20.51      23.8 +/-   20.51  0.040 / 0.040
G18     104.2          14.3               10.7 +/-    3.12      27.1 +/-    3.12  0.040 / 0.040
G23     161.3          13.7                9.6 +/-    2.42      24.7 +/-    2.42  0.090 / 0.060
G27     38.7           13.3                6.5 +/-    2.29      16.8 +/-    2.29  0.070 / 0.080
G28     265.9          47.6               10.4 +/-    4.38      13.5 +/-    4.38  0.070 / 0.050
G30     327.1          56.4                9.9 +/-    1.02      11.6 +/-    1.02  0.040 / 0.050