PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/07-09:13:00
G02     230.4          70.8                5.4 +/-    0.80       5.7 +/-    0.80  0.040 / 0.070
G05     175.1          10.7               -2.1 +/-   19.86      -5.7 +/-   19.86  0.040 / 0.070
G06     42.5           64.9                4.0 +/-    0.39       4.4 +/-    0.39  0.030 / 0.050
G12     321.0          46.6                4.0 +/-    1.18       5.2 +/-    1.18  0.040 / 0.040
G17     68.0           23.0                3.8 +/-    1.48       7.8 +/-    1.48  0.040 / 0.060
G19     49.6           43.7                3.3 +/-    0.43       4.6 +/-    0.43  0.050 / 0.060
G25     315.7          13.5                2.7 +/-    0.91       7.1 +/-    0.91  0.050 / 0.110