PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/16-08:43:10
G02     238.1          74.3                4.9 +/-    0.76       5.0 +/-    0.76  0.070 / 0.100
G05     173.4          13.9                2.2 +/-    2.20       5.7 +/-    2.20  0.070 / 0.090
G06     40.7           61.7                3.8 +/-    0.61       4.3 +/-    0.61  0.030 / 0.050
G12     321.3          49.8                3.6 +/-    1.18       4.6 +/-    1.18  0.040 / 0.050
G17     70.9           20.8                2.7 +/-    1.01       5.9 +/-    1.01  0.190 / 0.430
G19     53.7           41.3                3.4 +/-    0.57       4.9 +/-    0.57  0.170 / 0.220
G24     241.3          35.1                5.9 +/-    1.23       9.4 +/-    1.23  0.030 / 0.030
G25     316.4          17.0                3.0 +/-    1.65       7.2 +/-    1.65  0.030 / 0.040