PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/26-03:12:30
G02     201.6          33.4                6.6 +/-    1.37      10.8 +/-    1.37  0.020 / 0.040
G06     167.3          64.5                5.6 +/-    0.86       6.1 +/-    0.86  0.030 / 0.050
G12     305.6          11.8                0.6 +/-    7.20       1.6 +/-    7.20  0.030 / 0.030
G17     31.1           53.1                2.9 +/-    0.60       3.5 +/-    0.60  0.040 / 0.030
G19     355.0          66.8                2.2 +/-    0.67       2.3 +/-    0.67  0.040 / 0.100
G24     301.8          36.0                1.9 +/-    1.37       3.0 +/-    1.37  0.050 / 0.110
G28     99.9           32.6                3.7 +/-    1.30       6.1 +/-    1.30  0.160 / 0.270