PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/19-03:42:30
G02     201.7          34.1                7.2 +/-    1.11      11.7 +/-    1.11  0.070 / 0.100
G06     167.4          65.0                4.4 +/-    0.38       4.8 +/-    0.38  0.080 / 0.110
G12     305.9          12.2                2.7 +/-    6.85       7.3 +/-    6.85  0.030 / 0.040
G17     32.1           52.4                3.9 +/-    1.10       4.8 +/-    1.10  0.030 / 0.040
G19     356.8          66.5                2.4 +/-    0.41       2.6 +/-    0.41  0.030 / 0.040
G24     301.3          36.3                3.4 +/-    1.90       5.3 +/-    1.90  0.030 / 0.030
G28     100.6          32.2                3.7 +/-    0.93       6.2 +/-    0.93  0.230 / 0.330