PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/16-06:27:40
G02     10.1           72.3                1.1 +/-    0.51       1.1 +/-    0.51  0.040 / 0.060
G05     159.8          41.1                5.7 +/-    1.12       8.1 +/-    1.12  0.040 / 0.060
G06     43.0           36.5                1.9 +/-    1.58       3.0 +/-    1.58  0.060 / 0.050
G12     296.7          75.7                4.0 +/-    1.25       4.1 +/-    1.25  0.070 / 0.050
G19     81.5           22.9                3.8 +/-    2.66       7.9 +/-    2.66  0.030 / 0.030
G24     224.1          18.2                4.8 +/-    1.61      11.1 +/-    1.61  0.020 / 0.030
G25     315.8          34.4                2.2 +/-    1.17       3.5 +/-    1.17  0.030 / 0.040
G29     291.8          14.0                2.7 +/-    2.59       7.0 +/-    2.59  0.040 / 0.030