PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/13-03:43:00
G02     199.6          22.9                6.5 +/-    2.97      13.3 +/-    2.97  0.050 / 0.080
G06     173.7          52.3                5.0 +/-    0.58       6.1 +/-    0.58  0.070 / 0.080
G13     227.8          12.9                2.7 +/-    3.68       7.2 +/-    3.68  0.030 / 0.040
G17     20.3           60.6                3.5 +/-    0.76       3.9 +/-    0.76  0.040 / 0.050
G19     325.6          71.0                2.6 +/-    0.45       2.8 +/-    0.45  0.040 / 0.040
G24     310.4          29.1                1.9 +/-    0.84       3.3 +/-    0.84  0.040 / 0.040
G28     88.9           39.0                5.0 +/-    0.96       7.4 +/-    0.96  0.290 / 0.200
G30     155.8          10.6                5.6 +/-    2.83      15.5 +/-    2.83  0.420 / 0.230