PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/12-21:42:50
G07     336.6          59.5                9.9 +/-    0.36      11.3 +/-    0.36  0.080 / 0.060
G08     98.3           50.8               11.6 +/-    0.65      14.5 +/-    0.65  0.070 / 0.060
G09     193.8          75.6               10.5 +/-    1.04      10.8 +/-    1.04  0.190 / 0.290
G11     145.3          13.0                9.9 +/-    3.40      25.8 +/-    3.40  0.170 / 0.200
G16     46.0           11.8                7.4 +/-    5.76      19.8 +/-    5.76  0.040 / 0.040
G23     155.7          45.4               12.1 +/-    1.00      16.2 +/-    1.00  0.040 / 0.050
G27     59.1           34.4                9.7 +/-    1.62      15.6 +/-    1.62  0.040 / 0.050
G28     234.9          25.1               13.3 +/-    2.01      26.0 +/-    2.01  0.040 / 0.070
G30     300.3          33.7                8.9 +/-    1.51      14.5 +/-    1.51  0.040 / 0.030