PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/25-22:28:00
G07     2.2            66.1               11.2 +/-    0.65      12.1 +/-    0.65  0.050 / 0.180
G08     73.9           52.3               10.8 +/-    0.97      13.2 +/-    0.97  0.060 / 0.190
G09     182.3          56.5               12.7 +/-    0.73      14.9 +/-    0.73  0.230 / 0.410
G11     137.2          23.0               12.3 +/-    1.56      25.2 +/-    1.56  0.210 / 0.230
G23     158.9          23.0               12.8 +/-    0.85      26.3 +/-    0.85  0.030 / 0.040
G27     42.6           20.4                8.7 +/-    2.22      18.9 +/-    2.22  0.030 / 0.040
G28     253.4          42.5               11.7 +/-    2.26      16.4 +/-    2.26  0.070 / 0.150
G30     319.1          50.0                9.8 +/-    0.43      12.3 +/-    0.43  0.060 / 0.180