PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/14-22:28:00
G07     326.7          55.4                7.5 +/-    1.18       8.9 +/-    1.18  0.080 / 0.200
G08     109.3          50.8                9.1 +/-    0.50      11.4 +/-    0.50  0.080 / 0.190
G09     205.6          78.5                7.9 +/-    0.85       8.0 +/-    0.85  0.040 / 0.050
G16     45.6           11.2                6.9 +/-    1.41      18.7 +/-    1.41  0.040 / 0.060
G23     153.6          44.7                8.8 +/-    0.64      11.9 +/-    0.64  0.180 / 0.550
G27     58.4           33.0                6.7 +/-    0.80      11.1 +/-    0.80  0.190 / 0.510
G28     234.5          26.9               10.4 +/-    1.46      19.5 +/-    1.46  0.040 / 0.090
G30     301.3          36.2                9.5 +/-    1.85      14.7 +/-    1.85  0.040 / 0.080