PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-03:27:40
G02     201.4          32.8                6.1 +/-    1.25      10.0 +/-    1.25  0.070 / 0.120
G06     168.1          63.7                3.2 +/-    0.26       3.6 +/-    0.26  0.060 / 0.100
G12     305.2          11.3               -3.6 +/-   12.90      -9.8 +/-   12.90  0.100 / 0.210
G17     30.7           53.4                2.3 +/-    0.71       2.8 +/-    0.71  0.260 / 0.230
G19     353.7          67.1                0.9 +/-    0.46       1.0 +/-    0.46  0.040 / 0.040
G24     302.5          35.6                2.1 +/-    1.71       3.3 +/-    1.71  0.030 / 0.050
G28     99.3           33.0                2.4 +/-    1.13       4.0 +/-    1.13  0.030 / 0.020