PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/26-22:28:00
G07     6.5            66.8                9.2 +/-    0.71       9.9 +/-    0.71  0.100 / 0.100
G08     70.9           51.7                9.8 +/-    0.54      12.1 +/-    0.54  0.060 / 0.130
G09     181.8          54.4               11.0 +/-    0.64      13.2 +/-    0.64  0.100 / 0.100
G11     135.9          24.3               13.3 +/-    2.49      26.4 +/-    2.49  0.250 / 0.160
G23     159.1          21.2                9.7 +/-    1.40      20.8 +/-    1.40  0.040 / 0.040
G27     41.6           19.0                8.1 +/-    2.06      18.3 +/-    2.06  0.040 / 0.040
G28     255.5          43.8               10.2 +/-    4.12      14.0 +/-    4.12  0.030 / 0.040
G30     320.9          51.3                8.4 +/-    0.67      10.4 +/-    0.67  0.030 / 0.040